Quotes & Sayings


We, and creation itself, actualize the possibilities of the God who sustains the world, towards becoming in the world in a fuller, more deeper way. - R.E. Slater

There is urgency in coming to see the world as a web of interrelated processes of which we are integral parts, so that all of our choices and actions have [consequential effects upon] the world around us. - Process Metaphysician Alfred North Whitehead

Kurt Gödel's Incompleteness Theorem says (i) all closed systems are unprovable within themselves and, that (ii) all open systems are rightly understood as incomplete. - R.E. Slater

The most true thing about you is what God has said to you in Christ, "You are My Beloved." - Tripp Fuller

The God among us is the God who refuses to be God without us, so great is God's Love. - Tripp Fuller

According to some Christian outlooks we were made for another world. Perhaps, rather, we were made for this world to recreate, reclaim, redeem, and renew unto God's future aspiration by the power of His Spirit. - R.E. Slater

Our eschatological ethos is to love. To stand with those who are oppressed. To stand against those who are oppressing. It is that simple. Love is our only calling and Christian Hope. - R.E. Slater

Secularization theory has been massively falsified. We don't live in an age of secularity. We live in an age of explosive, pervasive religiosity... an age of religious pluralism. - Peter L. Berger

Exploring the edge of life and faith in a post-everything world. - Todd Littleton

I don't need another reason to believe, your love is all around for me to see. – Anon

Thou art our need; and in giving us more of thyself thou givest us all. - Khalil Gibran, Prayer XXIII

Be careful what you pretend to be. You become what you pretend to be. - Kurt Vonnegut

Religious beliefs, far from being primary, are often shaped and adjusted by our social goals. - Jim Forest

We become who we are by what we believe and can justify. - R.E. Slater

People, even more than things, need to be restored, renewed, revived, reclaimed, and redeemed; never throw out anyone. – Anon

Certainly, God's love has made fools of us all. - R.E. Slater

An apocalyptic Christian faith doesn't wait for Jesus to come, but for Jesus to become in our midst. - R.E. Slater

Christian belief in God begins with the cross and resurrection of Jesus, not with rational apologetics. - Eberhard Jüngel, Jürgen Moltmann

Our knowledge of God is through the 'I-Thou' encounter, not in finding God at the end of a syllogism or argument. There is a grave danger in any Christian treatment of God as an object. The God of Jesus Christ and Scripture is irreducibly subject and never made as an object, a force, a power, or a principle that can be manipulated. - Emil Brunner

“Ehyeh Asher Ehyeh” means "I will be that who I have yet to become." - God (Ex 3.14) or, conversely, “I AM who I AM Becoming.”

Our job is to love others without stopping to inquire whether or not they are worthy. - Thomas Merton

The church is God's world-changing social experiment of bringing unlikes and differents to the Eucharist/Communion table to share life with one another as a new kind of family. When this happens, we show to the world what love, justice, peace, reconciliation, and life together is designed by God to be. The church is God's show-and-tell for the world to see how God wants us to live as a blended, global, polypluralistic family united with one will, by one Lord, and baptized by one Spirit. – Anon

The cross that is planted at the heart of the history of the world cannot be uprooted. - Jacques Ellul

The Unity in whose loving presence the universe unfolds is inside each person as a call to welcome the stranger, protect animals and the earth, respect the dignity of each person, think new thoughts, and help bring about ecological civilizations. - John Cobb & Farhan A. Shah

If you board the wrong train it is of no use running along the corridors of the train in the other direction. - Dietrich Bonhoeffer

God's justice is restorative rather than punitive; His discipline is merciful rather than punishing; His power is made perfect in weakness; and His grace is sufficient for all. – Anon

Our little [biblical] systems have their day; they have their day and cease to be. They are but broken lights of Thee, and Thou, O God art more than they. - Alfred Lord Tennyson

We can’t control God; God is uncontrollable. God can’t control us; God’s love is uncontrolling! - Thomas Jay Oord

Life in perspective but always in process... as we are relational beings in process to one another, so life events are in process in relation to each event... as God is to Self, is to world, is to us... like Father, like sons and daughters, like events... life in process yet always in perspective. - R.E. Slater

To promote societal transition to sustainable ways of living and a global society founded on a shared ethical framework which includes respect and care for the community of life, ecological integrity, universal human rights, respect for diversity, economic justice, democracy, and a culture of peace. - The Earth Charter Mission Statement

Christian humanism is the belief that human freedom, individual conscience, and unencumbered rational inquiry are compatible with the practice of Christianity or even intrinsic in its doctrine. It represents a philosophical union of Christian faith and classical humanist principles. - Scott Postma

It is never wise to have a self-appointed religious institution determine a nation's moral code. The opportunities for moral compromise and failure are high; the moral codes and creeds assuredly racist, discriminatory, or subjectively and religiously defined; and the pronouncement of inhumanitarian political objectives quite predictable. - R.E. Slater

God's love must both center and define the Christian faith and all religious or human faiths seeking human and ecological balance in worlds of subtraction, harm, tragedy, and evil. - R.E. Slater

In Whitehead’s process ontology, we can think of the experiential ground of reality as an eternal pulse whereby what is objectively public in one moment becomes subjectively prehended in the next, and whereby the subject that emerges from its feelings then perishes into public expression as an object (or “superject”) aiming for novelty. There is a rhythm of Being between object and subject, not an ontological division. This rhythm powers the creative growth of the universe from one occasion of experience to the next. This is the Whiteheadian mantra: “The many become one and are increased by one.” - Matthew Segall

Without Love there is no Truth. And True Truth is always Loving. There is no dichotomy between these terms but only seamless integration. This is the premier centering focus of a Processual Theology of Love. - R.E. Slater

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Note: Generally I do not respond to commentary. I may read the comments but wish to reserve my time to write (or write from the comments I read). Instead, I'd like to see our community help one another and in the helping encourage and exhort each of us towards Christian love in Christ Jesus our Lord and Savior. - re slater

Saturday, December 27, 2014

The Messy Minds (Personalities) of Creative People


Beautiful Minds | Insights into intelligence, creativity, and the mind


The Messy Minds of Creative People
http://blogs.scientificamerican.com/beautiful-minds/2014/12/24/the-messy-minds-of-creative-people/

By Scott Barry Kaufman
December 24, 2014

The views expressed are those of the author and are not
necessarily those of Scientific American.

Creativity is very messy.


According to one prominent theory, the creative process involves four stages: preparation, incubation, illumination, and verification. This is all well in good in theory. In reality, the creative process often feels like this:



Or this:


The creative process

The creative process - from the first drop of paint on the canvas to the art exhibition - involves a mix of emotions, drives, skills, and behaviors. It’d be miraculous if these emotions, traits and behaviors didn’t often conflict with each other during the creative process, creating inner and outer tension. Indeed, creative people are often seen as weird, odd, and eccentric.

Over the years, scientists have attempted to capture the personality of creative people. But it hasn’t been easy putting them under the microscope. As psychologist Mihaly Csikszentmihalyi, who has interviewed creative people across various fields points out, creative people “show tendencies of thought and action that in most people are segregated. They contain contradictory extremes; instead of being an “individual,” each of them is a “multitude.”

So how can we possibly bring order to the messy minds of creators? A new paper offers some hope. Psychologists Guillaume Furst, Paolo Ghisletta and Todd Lubart present an integrative model of creativity and personality that is deeply grounded in past research on the personality of creative people.

Bringing together lots of different research threads over the years, they identified three “super-factors” of personality that predict creativity: Plasticity, Divergence, and Convergence.

The Super-Factors of Personality

Plasticity

Plasticity consists of the personality traits openness to experience, extraversion, high energy, and inspiration.* The common factor here is high drive for exploration, and those high in this super-factor of personality tend to have a lot of dopamine– “the neuromodulator of exploration“– coursing through their brains. Prior research has shown a strong link between Plasticity and creativity, especially in the arts.

Divergence

Divergence consists of non-conformity, impulsivity, low agreeableness, and low conscientiousness. People high in divergence may seem like jerks, but they are often just very independent thinkers. This super-factor is close to Hans Eysenck’s concept of “Psychoticism“. Throughout his life, Eysenck argued that these non-conforming characteristics were important contributors to high creative achievements.


Convergence

Finally, Convergence consists of high conscientiousness, precision, persistence, and critical sense. While not typically included in discussions of creativity, these characteristics are also important contributors to the creative process.

The researchers found that Convergence was strongly related to Plasticity. In other words, those who were open to new experiences, inspired, energetic, and exploratory tended to also have high levels of persistence and precision. The common factor here is most likely high energy. Perspiration and inspiration feed off each other, leading to even higher energy levels.

Nevertheless, these three super factors were at least partially distinct. For instance, those with high openness to experience and inspiration weren’t necessarily rebellious, impulsive, critical, or motivated to achieve.

Stages of Creativity

Critically, these three super-factors differed in importance depending on the stage of the creative process. While it’s true that the creative process is messy, scientists have at least put some order on things by agreeing on two broad classes of processes that work in cooperation to lead to high levels of creativity: Generation and Selection.

Generation (~ plasticity + divergence)

Generation consists of idea production and originality. During this stage, it’s crucial to silence the inner critic and imagine lots of different possibilities. This stage is all about quantity of ideas.

Selection (~ convergence)

Generation is necessary but not sufficient for creativity, however. Selection helps make the ideas not only novel, but also valuable to society. The Selection stage involves processes such as criticism, evaluation, formalization, and elaboration of ideas. As Furst and colleagues note, “The ultimate goal of Selection is thus to form a coherent final product by providing a constant check during its development.”

Looking at the super-factors of personality, the researchers found that Plasticity and Divergence were most strongly related to the Generation stage of creativity. In contrast, Convergence was most strongly related to Selection. This makes sense, considering that creativity involves both processes relating to novelty and processes relating to usefulness. Indeed, the researchers found that the interaction of Generation and Selection was associated with both the intensity and achievement of everyday creative activities.**

But hold up, you may say. How can creativity be associated with all of these things: openness to experience, inspiration, high energy, impulsivity, rebelliousness, critical thinking, precision, and conscientiousness? Isn’t that contradictory?


Which brings us back to the beginning of this article. Creativity involves many different stages. Those who are capable of reaching the heights of human creative expression are those who have the capacity for all of these characteristics and behaviors within themselves and are flexibly able to switch back and forth between them depending on the stage of the creative process, and what’s most adaptive in the moment.

I told you creativity is messy.

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Happy New Year! Thanks for supporting Beautiful Minds in 2014. Look out in 2015 for more insights on intelligence and creativity as well as a new book on the latest science of creativity, co-authored with Carolyn Gregoire.

© 2014 Scott Barry Kaufman, All Rights Reserved

* The researchers measured “extraversion”using the Big Five framework. Under this framework, extraversion consists of a collection of traits associated with high sensitivity to environmental rewards, including positive emotions, sociability, enthusiasm, novelty seeking, assertiveness, and self-confidence. This finding does notmean that introverts are less likely to be creative. In fact, research suggests that the sociability component of extraversion is not as strongly linked to creativity as the other components of extraversion. If anything, research shows that the capacity for solitude is essential for optimal creativity. The facets of extraversion that seem to be most crucial to creativity are those associated with enthusiasm, confidence, and ambition.

**Interestingly, selection alone was not related to creativity. In particular, they found that people who were really good at Selection showed reduced levels of creativity if their Generation skills were low. Therefore, Generation skills are essential to creativity, and while generation skills may compensate for lower levels of Selection ability, the highest levels of Selection in the world may not be able to help you create if you have very low Generation ability.

Acknowledgements: Thanks to Andrea Kuszewski and Carolyn Gregoire for bringing
those alternative conceptualizations of the creative process to my attention.

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About Scott Barry Kaufman

Scott Barry Kaufman is Scientific Director of The Imagination Institute and a researcher in the Positive Psychology Center at the University of Pennsylvania, where he investigates the measurement and development of imagination. Kaufman is also co-founder of The Creativity Post and author of Ungifted: Intelligence Redefined, in which he presents a holistic approach to achievement that takes into account each person’s personal goals, individual psychology, and developmental trajectory. Kaufman regularly gives keynotes and workshops for educators and business leaders on the development of intelligence, creativity, and human potential (see appearances). To book a speaking engagement, contact The Lavin Agency Speakers Bureau atinfo@thelavinagency.com. To reprint one of his articles, contactsales@featurewell.com.

For more on Scott, go to ScottBarryKaufman.com.

Follow on Twitter as @sbkaufman. Or visit their website.


Love Matters: The 1914 Christmas Truce of WWI




Peace is Possible: The Christmas Truce of 1914



Amid the darkness of World War I came an isolated but beautiful moment
where peace, faith, hope and humanity overcame the bonds of war, and,
even if for a night and a day, peace became possible.


Honoring 100 Years After The WWI 1914 Christmas Truce In Our Own Time Of War
http://www.huffingtonpost.com/2014/12/24/wwi-christmas-truce-anniversary_n_6356708.html?ncid=fcbklnkushpmg00000051

The Huffington Post | By Antonia Blumberg
December 24, 2014

Christmas 2014 marks 100 years since the historic Christmas truce united, if just for a few days, warring German and British troops on the WWI battlefield.

After months of fighting, the battle-weary soldiers agreed to lay down their weapons and cross "no man's land" to exchange gifts, goods and soccer games with their enemies. One soldier described the scene in a letter back home, which was later published in the Hampshire Chronicle:

I had a most extraordinary Christmas, and I have come to the conclusion that I would not have spent it out of the trenches for worlds. We went in on Christmas Eve, under the usual conditions of this sniping warfare, and carried on as usual during the night. As soon as it got light, however, the sniping died down on both sides, and by sunrise had ceased altogether. The complete silence was most weird, and I could not help thinking that this sort of mutual agreement would turn into an open truce. So it did. Encouraged by the absence of lead in the air, heads soon began popping up on both sides...

The truce lasted through Christmas and in some places carried through to the New Year. A row of small Christmas trees strung with lights lined the trenches, and the soldiers carried out the ceasefire Pope Benedict XV had asked world leaders to observe just weeks prior.

To honor the 100th anniversary of the Christmas truce, a group of students from Brigham Young University produced the above video with original photographs from 1914, accompanied by the BYU Men's Chorus rendition of "Silent Night." The video was released through Faith Counts, an interfaith organization with joint sponsorship from the U.S. Conference of Catholic Bishops, Hillel International, the Sikh American Legal Defense and Education Fund and other religious bodies.

The war would continue for another four years after the truce, claiming millions of lives and leaving millions more injured or missing. In our own era of war and unrest, however, the Christmas truce stands out as a reminder of human beings' capacity to put aside differences, lay down arms and join together in a sacred moment, a moment that perhaps could last into eternity.













Wednesday, December 24, 2014

The Argument of the Agnostic: Is Religion So Easily Deposed by Rationalism??


Today's article can be quite dissettling for first timers considering the arguments of an agnostic. However, it is quite clearly as plain that such arguments must be heard in order to understand the basis of those arguments when they are presented. Though not an argument for pure atheism, today's article is a strong argument with strong questions as to "Why a believer believers what s/he believes?" And if you do, then pray tell, "Let us all know, by all accounts please," asks the inquiring agnostic.

Essentially, for the evangelist and apologist this plea for a rational argument immediately becomes fraught with all kinds of obstacles and trap doors. In fact, though the temptation is to enter in forthrightly to debate and contend, the wise man knows that belief cannot be taught but caught; cannot be understood but embraced. That it is not necessary to answer the unknowable as much as to question our knowing and ourselves as being the universe's all-knowing omniscience source of de facto explanation as the agnostic would have us become.

Yeah, to answer a fool is to be a fool oneself. Which is most likely what an agnostic would think the closest thing to an answer that a believer might bring. However, for the believer himself or herself, we know all too well that some answers do come in our belief while many will not come. That it is not that we must have answers to help belief but that we must move towards our questioning beliefs in the totality of a faith stripped of its rationalism and demands for proof and knowing. Even those who stood before Jesus Himself seeing the God of the universe could not belief. Seeing, knowing, proving are not very good foundations to walking with God.

Yes, to believe is to be a fool in the eyes of the true agnostic, and yet to not believe is to act foolishly when the only best, surest thing that we can do is to simply believe. A man or woman of faith understands this, and through the course of life will have some questions answered and many not answered but the pith of one's faith is not based upon oneself but upon the One who giveth faith. The Creator God whose image is stamped upon us heart and soul. And through His Son Jesus that helps the unbelief of some to wrestle with life's most important questions of personal meaning, purpose, love, and so on.

Even so, my dear brothers and sisters, we move forward. Not clearly, not easily, but forward into the dark rifts and valleys of life's paradoxes, riddles, myths, and mysteries. What we know is that Jesus is come as Savior and Lord and that is enough. It is in that knowledge that all else becomes meaningful and meaning finds its purpose. Be at peace. Be courageous. Seek to love, not argue. And to touch the unbelief of some that they too may come to know Christ as Savior and Lord. Amen and amen.

R.E. Slater
December 24, 2014



God & Jesus | Credit: Wikimedia

Religion’s smart-people problem:
The shaky intellectual foundations of absolute faith
http://www.salon.com/2014/12/21/religions_smart_people_problem_the_shaky_intellectual_foundations_of_absolute_faith/

by John G. Messerly
December 21, 2014

Religious belief the world over has a strenuous
relationship with intellectualism. But why?

Should you believe in a God? Not according to most academic philosophers. A comprehensive survey revealed that only about 14 percent of English speaking professional philosophers are theists. As for what little religious belief remains among their colleagues, most professional philosophers regard it as a strange aberration among otherwise intelligent people. Among scientists the situation is much the same. Surveys of the members of the National Academy of Sciences, composed of the most prestigious scientists in the world, show that religious belief among them is practically nonexistent, about 7 percent.

Academic Philosophers of Faith - 14%

Prestigious Scientists of Faith - 7%

Now nothing definitely follows about the truth of a belief from what the majority of philosophers or scientists think. But such facts might cause believers discomfort. There has been a dramatic change in the last few centuries in the proportion of believers among the highly educated in the Western world. In the European Middle Ages belief in a God was ubiquitous, while today it is rare among the intelligentsia. This change occurred primarily because of the rise of modern science and a consensus among philosophers that arguments for the existence of gods, souls, afterlife and the like were unconvincing. Still, despite the view of professional philosophers and world-class scientists, religious beliefs have a universal appeal. What explains this?

The Appeal of Religion

Genes and environment explain human beliefs and behaviors—people do things because they are genomes in environments. The near universal appeal of religious belief suggests a biological component to religious beliefs and practices, and science increasingly confirms this view. There is a scientific consensus that our brains have been subject to natural selection. So what survival and reproductive roles might religious beliefs and practices have played in our evolutionary history? What mechanisms caused the mind to evolve toward religious beliefs and practices?

Today there are two basic [biological] explanations offered

1 - One says that religion evolved by natural selection—religion is an adaptation that provides an evolutionary advantage. For example religion may have evolved to enhance social cohesion and cooperation—it may have helped groups survive.

2 - The other explanation claims that religious beliefs and practices arose as byproducts of other adaptive traits. For example, intelligence is an adaptation that aids survival. Yet it also forms causal narratives for natural occurrences and postulates the existence of other minds. Thus the idea of hidden Gods explaining natural events was born.

Environmental Explanations for Religion

In addition to the biological basis for religious belief, there are environmental explanations. It is self-evident from the fact that religions are predominant in certain geographical areas but not others, that birthplace strongly influences religious belief. This suggests that people’s religious beliefs are, in large part, accidents of birth. Besides cultural influences there is the family; the best predictor of people’s religious beliefs in individuals is the religiosity of their parents. There are also social factors effecting religious belief. For example, a significant body of scientific evidence suggests that popular religion results from social dysfunction. Religion may be a coping mechanism for the stress caused by the lack of a good social safety net—hence the vast disparity between religious belief in Western Europe and the United States.

Better Conditions = Lower Belief Values

There is also a strong correlation between religious belief and various measures of social dysfunction including homicides, the proportion of people incarcerated, infant mortality, sexually transmitted diseases, teenage births, abortions, corruption, income inequality and more. While no causal relationship has been established, a United Nations list of the 20 best countries to live in shows the least religious nations generally at the top. Only in the United States, which was ranked as the 13th best country to live in, is religious belief strong relative to other countries. Moreover, virtually all the countries with comparatively little religious belief ranked high on the list of best countries, while the majority of countries with strong religious belief ranked low. While correlation does not equal causation, the evidence should give pause to religion’s defenders. There are good reasons to doubt that religious belief makes people’s lives go better, and good reasons to believe that they make their lives go worse.

People don’t want to know; they want to Believe

Despite all this most people still accept some religious claims. But this fact doesn’t give us much reason to accept religious claims. People believe many weird things that are completely irrational—astrology, fortunetelling, alien abductions, telekinesis and mind reading—and reject claims supported by an overwhelming body of evidence—biological evolution for example. More than three times as many Americans believe in the virgin birth of Jesus than in biological evolution, although few theologians take the former seriously, while no serious biologist rejects the latter!

Consider too that scientists don’t take surveys of the public to determine whether relativity or evolutionary theory are true; their truth is assured by the evidence as well as by resulting technologies—global positioning and flu vaccines work. With the wonders of science every day attesting to its truth, why do many prefer superstition and pseudo science? The simplest answer is that people believe what they want to, what they find comforting, not what the evidence supports: In general, people don’t want to know; they want to believe. This best summarizes why people tend to believe.

Why, then, do some highly educated people believe religious claims? 

First, smart persons are good at defending ideas that they originally believed for non-smart reasons. They want to believe something, say for emotional reasons, and they then become adept at defending those beliefs. No rational person would say there is more evidence for creation science than biological evolution, but the former satisfies some psychological need for many that the latter does not. How else to explain the hubris of the philosopher or theologian who knows little of biology or physics yet denies the findings of those sciences? It is arrogant of those with no scientific credentials and no experience in the field or laboratory, to reject the hard-earned knowledge of the science. Still they do it. (I knew a professional philosopher who doubted both evolution and climate science but believed he could prove that the Christian God must take a Trinitarian form! Surely something emotional had short-circuited his rational faculties.)

Second, the proclamations of educated believers are not always to be taken at face value. Many don’t believe religious claims but think them useful. They fear that in their absence others will lose a basis for hope, morality or meaning. These educated believers may believe that ordinary folks can’t handle the truth. They may feel it heartless to tell parents of a dying child that their little one doesn’t go to a better place. They may want to give bread to the masses, like Dostoevsky’s Grand Inquisitor.

Our sophisticated believers may be manipulating, using religion as a mechanism of social control, as Gibbon noted long ago:

“The various modes of worship which prevailed in the Roman world
were all considered by the people as equally true;
by the philosophers as equally false;
and by the magistrate as equally useful.” 

Consider the so-called religiosity of many contemporary politicians, whose actions belie the claim that they really believe the precepts of the religions to which they supposedly ascribe.

Individuals may also profess belief because it is socially unacceptable not to; they don’t want to be out of the mainstream or fear they will not be reelected or loved if they profess otherwise. So-called believers may not believe the truth of their claims; instead they may think that others are better off or more easily controlled if those others believe. Or perhaps they may just want to be socially accepted.

Third, when sophisticated thinkers claim to be religious, they often have something in mind unlike what the general populace believes. They may be process theologians who argue that god is not omnipotent, contains the world, and changes. They may identify god as an anti-entropic force pervading the universe leading it to higher levels of organization. They may be pantheists, panentheists, or death-of-god theologians. Yet these sophisticated varieties of religious belief bear little resemblance to popular religion. The masses would be astonished to discover how far such beliefs deviate from their theism.

Belief Declines with Knowledge or Higher IQs

But we shouldn’t be deceived. Although there are many educated religious believers, including some philosophers and scientists, religious belief declines with educational attainment, particularly with scientific education. Studies also show that religious belief declines among those with higher IQs. Hawking, Dennett and Dawkins are not outliers, and neither is Bill Gates or Warren Buffett.

Or consider this anecdotal evidence. Among the intelligentsia it is common and widespread to find individuals who lost childhood religious beliefs as their education in philosophy and the sciences advanced. By contrast, it is almost unheard of to find disbelievers in youth who came to belief as their education progressed. This asymmetry is significant; advancing education is detrimental to religious belief. This suggest another part of the explanation for religious belief—scientific illiteracy.

The Burden of Proof is on the Believer... Not the Unbeliever
[An Argument for Agnosticism]

If we combine reasonable explanations of the origin of religious beliefs and the small amount of belief among the intelligentsia with the problematic nature of beliefs in gods, souls, afterlives or supernatural phenomena generally, we can conclude that (supernatural) religious beliefs are probably false. And we should remember that the burden of proof is not on the disbeliever to demonstrate there are no gods, but on believers to demonstrate that there are. Believers are not justified in affirming their belief on the basis of another’s inability to conclusively refute them, any more than a believer in invisible elephants can command my assent on the basis of my not being able to “disprove” the existence of the aforementioned elephants. If the believer can’t provide evidence for a god’s existence, then I have no reason to believe in gods.

In response to the difficulties with providing reasons to believe in things unseen, combined with the various explanations of belief, you might turn to faith. It is easy to believe something without good reasons if you are determined to do so—like the queen in “Alice and Wonderland” who “sometimes … believed as many as six impossible things before breakfast.” But there are problems with this approach. First, if you defend such beliefs by claiming that you have a right to your opinion, however unsupported by evidence it might be, you are referring to a political or legal right, not an epistemic one. You may have a legal right to say whatever you want, but you have epistemic justification only if there are good reasons and evidence to support your claim. If someone makes a claim without concern for reasons and evidence, we should conclude that they simply don’t care about what’s true. We shouldn’t conclude that their beliefs are true because they are fervently held.

Another problem is that fideism—basing one’s beliefs exclusively on faith—makes belief arbitrary, leaving no way to distinguish one religious belief from another. Fideism allows no reason to favor your preferred beliefs or superstitions over others. If I must accept your beliefs without evidence, then you must accept mine, no matter what absurdity I believe in. But is belief without reason and evidence worthy of rational beings? Doesn’t it perpetuate the cycle of superstition and ignorance that has historically enslaved us? I agree with W.K. Clifford:

“It is wrong always, everywhere and for everyone
to believe anything upon insufficient evidence.”

Why? Because your beliefs affect other people, and your false beliefs may harm them.

The counter to Clifford’s evidentialism has been captured by thinkers like Blaise Pascal, William James, and Miguel de Unamuno. Pascal’s famous dictum expresses: “The heart has its reasons which reason knows nothing of.” William James claimed that reason can’t resolve all issues and so we are sometimes justified believing ideas that work for us. Unamuno searched for answers to existential questions, counseling us to abandon rationalism and embrace faith. Such proposals are probably the best the religious can muster, but if reason can’t resolve our questions then agnosticism, not faith, is required.

Besides, faith without reason doesn’t satisfy most of us, hence our willingness to seek reasons to believe. If those reasons are not convincing, if you conclude that religious beliefs are untrue, then religious answers to life’s questions are worthless. You might comfort yourself by believing that little green dogs in the sky care for you but this is just nonsense, as are any answers attached to such nonsense. Religion may help us in the way that whisky helps a drunk, but we don’t want to go through life drunk. If religious beliefs are just vulgar superstitions, then we are basing our lives on delusions. And who would want to do that?

An Argument for a Better Humanity

Why is all this important? Because human beings need their childhood to end; they need to face life with all its bleakness and beauty, its lust and its love, its war and its peace. They need to make the world better. No one else will.


John G. Messerly is the author of “The Meaning of Life: Religious, Philosophical, Scientific, and Transhumanist Perspectives.” He blogs these issues daily at reasonandmeaning.com. You can follow him on Twitter @hume1955.


The Hobbit and the Riddle of Christmas


Bilbo Baggins | Credit: New Line Cinema


Like Bilbo Baggins, there is more to the Christ Child than appears:
He too is a riddle and Christmas poems and carols rightly love to extend
the contradictions of His birth into paradox.


The Hobbit and the Riddle of Christmas
http://www.abc.net.au/religion/articles/2014/12/22/4153235.htm

by Alison Milbank | ABC Religion and Ethics
December 22, 2014

Although Tolkien's novel The Hobbit begins in the Springtime and ends in Midsummer, it is pure Christmas. It begins with overwhelming numbers of unexpected visitors and much consumption of good food and drink, and ends with a cascade of present-giving.

"Dragon-sickness" - the lust for gold and material goods - strikes not only children at this season. Indeed, recent years have shown up the greedy hoarding of money, houses and yachts among the rich in a manner reminiscent of Smaug's bewildering "glamour": some earn salaries many times larger in proportion to other workers' wages than in earlier times, while making us all believe that their value in the market dictates and thus justifies this obscenely large remuneration.

The Hobbit is a story which shows that it is not just the rich who become enthralled by the glitter of wealth, but also the dispossessed. The great dwarf craftsmen in metal who are on a quest to regain their stolen gold are possessed by "a fierce and jealous love" for it. Even Bilbo the hobbit, who is generally more interested in breakfast than gold, is bewildered and seduced by coming upon the dwarves' great ancestral jewel, the Arkenstone. Like the Ring he chanced upon under the Misty Mountains, the stone is quickly tucked away in his pocket, and he does not tell his companions that he has it: he becomes the burglar that his name, Baggins, suggests he has the potential to be. Soon Lakemen, elves and birds all gather round the dragon hoard, wanting a share of the spoils.

What breaks the deadlock as these groups lay siege to the mountain where the dwarves refuse to share any of the treasure, is another theft by Bilbo. He takes the Arkenstone and offers it to the besiegers, so that they can use its glamour over Thorin the dwarf king to force him to make peace. As a result of this burglary, Bilbo is thrown out of the dwarves' company, and is lucky to escape with his life.

Yet at many crucial stages on their journey, it had been Bilbo's underhand ways that had ensured their safety: like Odysseus, who hid his men as sheep to evade the Cyclops, Bilbo smuggles the dwarves out of the Elven-King's prison in barrels, which are floated down the river; Bilbo's invisibility allows him to rescue the dwarves from the Mirkwood spiders.

Even Bilbo's riddles, fair as they are in a riddle contest in Anglo-Saxon or Norse conventions, smuggle truth in disguised form:

"A box without hinges, key or lid,
Yet golden treasure inside is hid."

What the riddle does is to state the reality of an object in paradoxical form, in contradictory ideas. How can a box lack any mode of ingress? How did the treasure get into the box? Our normal categories are questioned and for a moment, a riddle makes the world seem strange or bizarre. In deciphering the answer, we are forced to look at the object in a new way. After the "making strange" comes the illumination; once a riddle is solved it is blindingly obvious - but the egg takes on a new depth of meaning.

The burglar Bilbo is himself a kind of riddle, and of course, the last riddle question Bilbo asks Gollum is "What do I have in my pocket?" Bilbo is thus the key to the riddle whose answer is the emblematic Ring, "the precious" object of desire. Bilbo is the key as he is associated with keys in the course of the plot. He finds the key to the trolls' hoard, which contains important weapons, including the sword, Sting, which Gandalf gives him and which will have so vital a role in this story and in The Lord of the Rings.

Bilbo can take this role precisely because he is not in quite such thrall to gold as the other characters, and where Gollum riddles words associated with his alienated life underground, Bilbo's riddles all point towards relationships and the social in some way - as in

"No-legs lay on one-leg,
two-legs sat near on three-legs,
four legs got some,"

which conjures up a whole society of a man and a cat sharing a fish-supper. Bilbo is rather like a fairy-tale trickster: a trump card who changes situations and rules and makes new connections.

And like the Christmas burglar and chimney invader, Santa Claus, he is a distributor and gift-giver. For The Hobbit takes us modern capitalists - and Bilbo too with his formal contract - on a journey into more ancient economic models of exchange, in which society operates through the giving and receiving of gifts. To be a recipient of a gift is also to become a gift-giver oneself, so we see the Lake Men restoring the Arkenstone to lie on the breast of the dead Thorin. Bilbo himself is offered huge amounts of treasure but accepts only as much as one pony can carry, and then proceeds to donate jewels as he travels. Once home again in Bag End, he spends the rest in presents too. Tolkien makes all this central to hobbit society, in which one gives as well as receives presents on one's birthday.

The answer to dragon-sickness is not just simple generosity but giving as a mode of exchange, which unites donor and recipient, and which prompts reciprocity. Tolkien unites here gift-exchange practices of traditional societies with the Distributist political vision of his own day, which sought a more equal and just society not by removing private property but by distributing it as widely as possible.

Reading this at Christmas, however, reminds us of the most widely distributed gift of all: the Christ Child, who is given to all of us and to the earth itself. God the burglar - the thief in the night - smuggles himself into the world He made: "veiled in flesh the Godhead see" as Wesley's hymn reminds us and another begins, "When came in flesh the Incarnate Word / The heedless world slept on." Like Bilbo Baggins, there is more to this baby than appears: he too is a riddle, and Christmas poems and carols love to extend the contradictions of his birth into paradox, as in this example from Richard Crashaw:

Welcome all wonders in one sight,
Aeternity shut in a span.
Summer in winter, day in night,
Heaven in earth, and GOD in MAN.

To read this riddle is to open a way to unlock the frozen gaze, fascinated by the dragon hoard but not in such a way as to reject the beauty and value of material objects so much as to pass them on. To see the baby hidden in the manger is to recognise the true Arkenstone, the "heart of the mountain," shining with "its own inner light." The - precious - gift of the Christ Child allows us to be more wedded to the world than ever, but in such a way as to become aware of its vulnerability and contingency.

On his death-bed, the dwarf king, Thorin commends Bilbo's blend of courage and wisdom, adding, "if more of us valued food and cheer and song above hoarded gold, it would be a merrier world." Food and cheer are transitory pleasures, which take their value from the moment and the company. The Hobbit is actually as much about food or lack of it - as well as the fear of being eaten - as it is about the shiny solidity of metal. The dwarves are continually tightening their belts or existing on cram.

Just as Bilbo teaches the dwarves the value of sharing their gold, so they teach him at their first encounter - the unexpected party - the value of sharing food and distributing it as widely as possible. What, one wonders, was one bachelor hobbit going to do with a larder as full as his obviously was with mince-pies and cheese, seed-cakes, pork pies, cold chicken and pickles?

Economics is not a party, and the Incarnation is not a political program but I believe The Hobbit has something profound to offer us at this festive season about the true use of the bounty and beauty of the earth, which is to distribute it in such a way as to enable and make visible as many relations between producers and consumers, and fellow-workers as possible in contrast to the barren golden abstractions and glamour of money-markets. Ruskin wrote, "there is no wealth but life" and the hobbits are so successful a race as enablers and burglars because deep down they know that too.

But even the comfort and the fellowship of the Shire must be given up, "made strange" and riddled, so that one can travel "there and back again." When Bilbo brings us back with him from the Lonely Mountain, ordinary hobbit and human life can itself be received back as a gift, and seen as such, so that its comforts may be shared with others.


Alison Milbank is Associate Professor of Literature and Theology at the University of Nottingham, and Priest Vicar of Southwell Minster. She is the author of Chesterton and Tolkien as Theologians: The Fantasy of the Real.

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See Also

by Ralph C. Wood | June 2, 2014

by John Milbank | Dec 31, 2013

by Josephine Gabelman | Dec 24, 2013

by Alister McGrath | Dec 22, 204


Tuesday, December 23, 2014

Meet Christopher Skinner in Faith and Conversation


Christopher W. Skinner

Crux Sola: An Interview with Christopher W. Skinner
http://nblo.gs/12ded2

by Allan R. Bevere
December 22, 2014

Today's interview is with Christopher Skinner, who is Associate Professor of Religion at the University of Mount Olive in North Carolina. I got to know Christopher when we became contributors to a recent book published by InterVarsity Press, Jesus Is Lord, Caesar Is Not: Evaluating Empire in New Testament Studies. Chris blogs at Crux Sola (along with Nijay Gupta). I have found him to be a careful scholar and a person of deep and questioning Christian faith. If you have not read anything he has written, you need to do so.

Let the interview begin.

---

ARB: Tell us a little about yourself.

CWS: Well, that's a little open-ended! I guess I'll start with the most important things first. I have been married to my wife, Tara, since 1997 and our lives together revolve around caring for our three children, Christopher (14), Abby (12), and Drew (9). The four of them are the very best things in my life.

When I am not with my family, I serve as Associate Professor of Religion at the University of Mount Olive in North Carolina, where I have taught since 2010. I have a Ph.D. in Biblical Studies from the Catholic University of America in Washington, D.C. (2007), where I was privileged to spend significant time with a "who's who" of NT scholars, including Francis J. Moloney, Frank Matera, Joseph Fitzmyer, and Raymond Collins. 

I'm also a huge fan of the NFL franchise based in Washington, D.C., as well as the Baltimore Orioles…..which essentially means that I have been disappointed every football and baseball season for the better part of two decades.


ARB: What has been your faith journey, thus far? What are your core beliefs as a Christian?

CWS: I have talked about this a bit elsewhere. I was raised in a church culture that was quite conservative. That conservatism included how literally we interpreted the Bible and extended to social and political conservatism as well. While that foundation served me well in some respects throughout my youth and early adulthood, I ultimately found it to be far too restrictive in too many ways.

However, in that context I began to recognize something of a "calling" when I was about 14 years old, though I refused to acknowledge it until I was about 19. I guess you can say that I began to pursue that calling in my early 20s though it looks much different today than it did back then and certainly much different than I expected it to look when I first began the journey.

As far as my "core beliefs" go, I would say that I confess the Apostles' Creed (which we actually recite weekly at my church), even if there are some things in the creed that give me pause. I guess my core beliefs are somewhat Barthian in that I believe Jesus Christ must be the focus of a uniquely Christian faith.


ARB: How have you progressed as a scholar? What did you believe that you no longer can?

CWS: I would say that my progression as a scholar has been steadily incremental during this first full decade of my teaching career. Of course, the most dramatic growth took place during my doctoral program. Compared to most of my colleagues and friends, I had a fairly atypical experience. While many are able to devote themselves solely to a course of study during their doctoral program, I did not have that opportunity. I was married with children and serving on the full-time pastoral staff at a church in Baltimore while working on my Ph.D. at Catholic University. Though this schedule was demanding and created tremendous work (and stress) for me, it was an ideal situation in many ways.

The rigorous emphasis on developing competency in Greek, Hebrew, Coptic, Aramaic, Syriac, etc.-- which was a real hallmark of the program at CUA-- along with a focus on staying close to the text, helped me develop in more ways than I could have ever imagined. When you are that close to a text, its original language(s), and all the trappings of its interrelated cultures, previously "clear" theological formulations and doctrinal commitments can easily become very messy

This caused problems for my faith but also opened up other vistas that I never imagined. On the other hand, there was a real sense of urgency in my mind each week, to consider in fresh ways the significance of these texts for the community of faith I was serving. All of this made me much more sensitive to both ancient and modern contexts.

My progression as a scholar continues but it's not as dramatic. It helps to explain it like this: when you see your children every day, you don't get a true impression of how much they're actually growing. But when you look back at pictures from the previous year, you get a real sense of their growth and how dramatic it actually is. Every so often I'll read something I wrote a few years before or listen to something I previously taught or preached, and only then do I get a feel for how I've progressed. 

If I'm being completely honest with you, there are many things that I no longer believe, though I'm not sure it would be helpful to list all of them here. Perhaps it will be helpful for me to express it this way: There have been times when certain biblical texts spoke to me and edified me in clear and substantive ways-- ways that essentially determined major trajectories in my life. Today, those texts do not (and in most cases, cannot) speak to me with that same voice from the past. There's an inevitable sense of mourning and even disillusionment associated with that reality, though I am also driven to discover the new voices and different ways through which the text can speak. These days I find that I don't have a lot of answers, just a lot more questions

As I get older, my parents have gotten much smarter(!), and my mother has actually been immensely helpful as I wrestle with these issues. She's a very keen thinker with a great sensitivity toward the fragility of the human experience. I often bounce these things off of her to see if she has arrived at any more clarity than I have. Even if I don't arrive at answers, I find edification in the very conversation.


ARB: What have you written and published. What are you looking to write in the future?

CWS: My specific interests lie in the areas of Jesus and the gospel traditions. I have written or edited six books, all but one of which are devoted to issues in the interpretation of the gospels. I have just finished a manuscript for an introductory level textbook entitled, Reading John, which is set to be published in the Cascade Companions series early next year:


I am currently working on two projects, both of which are under contract. The first is a book I'm co-authoring with my blog mate, Nijay Gupta entitled, Across the Spectrum of New Testament Studies (Baker, 2017). That book aims to present an accessible and balanced introduction to the "spectrum" of viewpoints on key issues in New Testament studies. For each subject, between two and five positions are outlined, addressing the strengths and weaknesses of each stance.

The second project is an edited volume entitled, Johannine Ethics: The Moral World of the Gospel and Epistles of John (Fortress, 2017). Once these two projects are completed, I hope to write a few things for a wider audience than just students and scholars in the field of New Testament studies. I would like to address bigger questions for a much broader readership.


ARB: Too many persons, unfortunately think faith and scholarship are mutually exclusive. How do you bring the two together?

CWS: I don't think there's any formula for living in the midst of the tension that is created by the messy conclusions of biblical scholarship juxtaposed with the sometimes "tidy" world of faith commitments. I will admit that it is not easy for me. I often find sermons intellectually dishonest and condescending, which can make the tension even more unbearable. I have told my wife over and over that so often I feel like the father in Mark 9 who exclaims, "I believe. Help my unbelief."

I also think it is important to strive for intellectual honesty at every turn and admit when a belief either no longer makes sense or is no longer useful in light of what we are learning about the Bible and the world around us. In my thinking about theology I rely a lot upon the Wesleyan Quadrilateral. What I believe has to make sense in the contexts of reason, Scripture, tradition, and experience.


ARB: As a scholar and a churchman, what would you like to say to the church in general?

CWS: I would love for churches to stop baptizing their political ideologies in the name of Christianity and mining the pages of the Bible for proof texts that will support their political views and affiliations. Recently a study was released that found that an overwhelming majority of Christians in the United States were not opposed to torture. This leads me to wonder, does Christianity conceive of Jesus as the Prince of Peace or the Purveyor of Preemptive Justice? There's a lot more I could say here, but let’s fix one thing at a time.


ARB: If you could attend your ideal church, how would it look?

CWS: I have always found this to be such a difficult question. If we are to believe the accounts we read in the NT, Jesus was a very counter-cultural, non-institutional figure. So a major problem with ecclesiastical expressions of Christianity is that they build entire institutions with their own intentionally normative culture(s).

Ideally, I would love to be a part of an inclusive community that takes Jesus seriously. Too often in western churches the things we should take literally (like turning the other cheek, praying for our enemies) are spiritualized while things like "being forgiven so that we can go to heaven" (never explicitly mentioned in the NT) are literalized to the point of becoming the only basis of faith.

Also, I grew up in a Baptist church and there was always lots of food, so I guess an ideal church would also have an abundant supply of fresh, flaky biscuits. :-)


ARB: Thanks Chris for your time. If you would like to interact with Dr. Skinner, please visit his blog, Sola Crux.



Questions of Time: Is the Source to Time's Aarow based on Entropy or Gravitation?





2 Futures Can Explain Time's Mysterious Past
http://www.scientificamerican.com/article/2-futures-can-explain-time-s-mysterious-past/?WT.mc_id=SA_Facebook

by Lee Billings
December 8, 2014

New theories suggest the big bang was not the beginning,
and that we may live in the past of a parallel universe


In the evolution of cosmic structure, is entropy or gravity the more dominant force? The answer to this question has deep implications for the universe's future, as well as its past.
Credit: NASA; ESA; G. Illingworth, D. Magee, and P. Oesch, University of California, Santa Cruz; R. Bouwens, Leiden University; and the HUDF09 Team
Physicists have a problem with time.

Whether through Newton’s gravitation, Maxwell’s electrodynamics, Einstein’s special and general relativity or quantum mechanics, all the equations that best describe our universe work perfectly if time flows forward or backward.

Of course the world we experience is entirely different. The universe is expanding, not contracting. Stars emit light rather than absorb it, and radioactive atoms decay rather than reassemble. Omelets don’t transform back to unbroken eggs and cigarettes never coalesce from smoke and ashes. We remember the past, not the future, and we grow old and decrepit, not young and rejuvenated. For us, time has a clear and irreversible direction. It flies forward like a missile, equations be damned.

For more than a century, the standard explanation for “time’s arrow,” as the astrophysicist Arthur Eddington first called it in 1927, has been that it is an emergent property of thermodynamics, as first laid out in the work of the 19th-century Austrian physicist Ludwig Boltzmann. In this view what we perceive as the arrow of time is really just the inexorable rearrangement of highly ordered states into random, useless configurations, a product of the universal tendency for all things to settle toward equilibrium with one another.

Informally speaking, the crux of this idea is that “things fall apart,” but more formally, it is a consequence of the second law of thermodynamics, which Boltzmann helped devise. The law states that in any closed system (like the universe itself), entropy—disorder—can only increase. Increasing entropy is a cosmic certainty because there are always a great many more disordered states than orderly ones for any given system, similar to how there are many more ways to scatter papers across a desk than to stack them neatly in a single pile.


The thermodynamic arrow of time suggests our observable universe began in an exceptionally special state of high order and low entropy, like a pristine cosmic egg materializing at the beginning of time to be broken and scrambled for all eternity. From Boltzmann’s era onward, scientists allergic to the notion of such an immaculate conception have been grappling with this conundrum.

Boltzmann, believing the universe to be eternal in accordance with Newton’s laws, thought that eternity could explain a low-entropy origin for time’s arrow. Given enough time—endless time, in fact—anything that can happen will happen, including the emergence of a large region of very low entropy as a statistical fluctuation from an ageless, high-entropy universe in a state of near-equilibrium. Boltzmann mused that we might live in such an improbable region, with an arrow of time set by the region’s long, slow entropic slide back into equilibrium.

Today’s cosmologists have a tougher task, because the universe as we now know it isn’t ageless and unmoving: They have to explain the emergence of time’s arrow within a dynamic, relativistic universe that apparently began some 14 billion years ago in the fiery conflagration of the big bang. More often than not the explanation involves ‘fine-tuning’—the careful and arbitrary tweaking of a theory’s parameters to accord with observations.

Many of the modern explanations for a low-entropy arrow of time involve a theory called inflation—the idea that a strange burst of antigravity ballooned the primordial universe to an astronomically larger size, smoothing it out into what corresponds to a very low-entropy state from which subsequent cosmic structures could emerge. But explaining inflation itself seems to require even more fine-tuning. One of the problems is that once begun, inflation tends to continue unstoppably. This “eternal inflation” would spawn infinitudes of baby universes about which predictions and observations are, at best, elusive. Whether this is an undesirable bug or a wonderful feature of the theory is a matter of fierce debate; for the time being it seems that inflation’s extreme flexibility and explanatory power are both its greatest strength and its greatest weakness.

For all these reasons, some scientists seeking a low-entropy origin for time’s arrow find explanations relying on inflation slightly unsatisfying. “There are many researchers now trying to show in some natural way why it’s reasonable to expect the initial entropy of the universe to be very low,” says David Albert, a philosopher and physicist at Columbia University. “There are even some who think that the entropy being low at the beginning of the universe should just be added as a new law of physics.”

That latter idea is tantamount to despairing cosmologists simply throwing in the towel. Fortunately, there may be another way.

Tentative new work from Julian Barbour of the University of Oxford, Tim Koslowski of the University of New Brunswick and Flavio Mercati of the Perimeter Institute for Theoretical Physics suggests that perhaps the arrow of time doesn’t really require a fine-tuned, low-entropy initial state at all but is instead the inevitable product of the fundamental laws of physics. Barbour and his colleagues argue that it is gravity, rather than thermodynamics, that draws the bowstring to let time’s arrow fly. Their findings were published in October in Physical Review Letters.

The team’s conclusions come from studying an exceedingly simple proxy for our universe, a computer simulation of 1,000 pointlike particles interacting under the influence of Newtonian gravity. They investigated the dynamic behavior of the system using a measure of its "complexity," which corresponds to the ratio of the distance between the system’s closest pair of particles and the distance between the most widely separated particle pair. The system’s complexity is at its lowest when all the particles come together in a densely packed cloud, a state of minimum size and maximum uniformity roughly analogous to the big bang. The team’s analysis showed that essentially every configuration of particles, regardless of their number and scale, would evolve into this low-complexity state. Thus, the sheer force of gravity sets the stage for the system’s expansion and the origin of time’s arrow, all without any delicate fine-tuning to first establish a low-entropy initial condition.

From that low-complexity state, the system of particles then expands outward in both temporal directions, creating two distinct, symmetric and opposite arrows of time. Along each of the two temporal paths, gravity then pulls the particles into larger, more ordered and complex structures—the model’s equivalent of galaxy clusters, stars and planetary systems. From there, the standard thermodynamic passage of time can manifest and unfold on each of the two divergent paths. In other words, the model has one past but two futures. As hinted by the time-indifferent laws of physics, time’s arrow may in a sense move in two directions, although any observer can only see and experience one. “It is the nature of gravity to pull the universe out of its primordial chaos and create structure, order and complexity,” Mercati says. “All the solutions break into two epochs, which go on forever in the two time directions, divided by this central state which has very characteristic properties.”

Although the model is crude, and does not incorporate either quantum mechanics or general relativity, its potential implications are vast. If it holds true for our actual universe, then the big bang could no longer be considered a cosmic beginning but rather only a phase in an effectively timeless and eternal universe. More prosaically, a two-branched arrow of time would lead to curious incongruities for observers on opposite sides. “This two-futures situation would exhibit a single, chaotic past in both directions, meaning that there would be essentially two universes, one on either side of this central state,” Barbour says. “If they were complicated enough, both sides could sustain observers who would perceive time going in opposite directions. Any intelligent beings there would define their arrow of time as moving away from this central state. They would think we now live in their deepest past.”

What’s more, Barbour says, if gravitation does prove to be fundamental to the arrow of time, this could sooner or later generate testable predictions and potentially lead to a less “ad hoc” explanation than inflation for the history and structure of our observable universe.

This is not the first rigorous two-futures solution for time’s arrow. Most notably, California Institute of Technology cosmologist Sean Carroll and a graduate student, Jennifer Chen, produced their own branching model in 2004, one that sought to explain the low-entropy origin of time’s arrow in the context of cosmic inflation and the creation of baby universes. They attribute the arrow of time’s emergence in their model not so much to entropy being very low in the past but rather to entropy being so much higher in both futures, increased by the inflation-driven creation of baby universes.

A decade on, Carroll is just as bullish about the prospect that increasing entropy alone is the source for time’s arrow, rather than other influences such as gravity. “Everything that happens in the universe to distinguish the past from the future is ultimately because the entropy is lower in one direction and higher in the other,” Carroll says. “This paper by Barbour, Koslowski and Mercati is good because they roll up their sleeves and do the calculations for their specific model of particles interacting via gravity, but I don’t think it’s the model that is interesting—it’s the model’s behavior being analyzed carefully…. I think basically any time you have a finite collection of particles in a really big space you’ll get this kind of generic behavior they describe. The real question is, is our universe like that? That’s the hard part.”

Together with Alan Guth, the Massachusetts Institute of Technology cosmologist who pioneered the theory of inflation, Carroll is now working on a thermodynamic response of sorts to the new claims for a gravitational arrow of time: Another exceedingly simple particle-based model universe that also naturally gives rise to time’s arrow, but without the addition of gravity or any other forces. The thermodynamic secret to the model’s success, they say, is assuming that the universe has an unlimited capacity for entropy.

“If we assume there is no maximum possible entropy for the universe, then any state can be a state of low entropy,” Guth says. “That may sound dumb, but I think it really works, and I also think it’s the secret of the Barbour et al construction. If there’s no limit to how big the entropy can get, then you can start anywhere, and from that starting point you’d expect entropy to rise as the system moves to explore larger and larger regions of phase space. Eternal inflation is a natural context in which to invoke this idea, since it looks like the maximum possible entropy is unlimited in an eternally inflating universe.”

The controversy over time’s arrow has come far since the 19th-century ideas of Boltzmann and the 20th-century notions of Eddington, but in many ways, Barbour says, the debate at its core remains appropriately timeless. “This is opening up a completely new way to think about a fundamental problem, the nature of the arrow of time and the origin of the second law of thermodynamics,” Barbour says. “But really we’re just investigating a new aspect of Newton’s gravitation, which hadn’t been noticed before. Who knows what might flow from this with further work and elaboration?”

“Arthur Eddington coined the term ‘arrow of time,’ and famously said the shuffling of material and energy is the only thing which nature cannot undo,” Barbour adds. “And here we are, showing beyond any doubt really that this is in fact exactly what gravity does. It takes [entropic] systems that look extraordinarily disordered and makes them wonderfully ordered. And this is what has happened in our universe. We are realizing the ancient Greek dream of order out of chaos.”


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Additional References







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FROM THE BLOG OF SEAN CARROLL

Why Does Dark Energy
Make the Universe Accelerate?
http://www.preposterousuniverse.com/blog/2013/11/16/why-does-dark-energy-make-the-universe-accelerate/

November 16, 2013

Peter Coles has issued a challenge: explain why dark energy makes the universe accelerate in terms that are understandable to non-scientists. This is a pet peeve of mine — any number of fellow cosmologists will recall me haranguing them about it over coffee at conferences — but I’m not sure I’ve ever blogged about it directly, so here goes. In three parts: the wrong way, the right way, and the math.

The Wrong Way

Ordinary matter acts to slow down the expansion of the universe. That makes intuitive sense, because the matter is exerting a gravitational force, acting to pull things together. So why does dark energy seem to push things apart?

The usual (wrong) way to explain this is to point out that dark energy has “negative pressure.” The kind of pressure we are most familiar with, in a balloon or an inflated tire, pushing out on the membrane enclosing it. But negative pressure — tension — is more like a stretched string or rubber band, pulling in rather than pushing out. And dark energy has negative pressure, so that makes the universe accelerate.

If the kindly cosmologist is both lazy and fortunate, that little bit of word salad will suffice. But it makes no sense at all, as Peter points out. Why do we go through all the conceptual effort of explaining that negative pressure corresponds to a pull, and then quickly mumble that this accounts for why galaxies are pushed apart?

So the slightly more careful cosmologist has to explain that the direct action of this negative pressure is completely impotent, because it’s equal in all directions and cancels out. (That’s a bit of a lie as well, of course; it’s really because you don’t interact directly with the dark energy, so you don’t feel pressure of any sort, but admitting that runs the risk of making it all seem even more confusing.) What matters, according to this line of fast talk, is the gravitational effect of the negative pressure. And in Einstein’s general relativity, unlike Newtonian gravity, both the pressure and the energy contribute to the force of gravity. The negative pressure associated with dark energy is so large that it overcomes the positive (attractive) impulse of the energy itself, so the net effect is a push rather than a pull.

This explanation isn’t wrong; it does track the actual equations. But it’s not the slightest bit of help in bringing people to any real understanding. It simply replaces one question (why does dark energy cause acceleration?) with two facts that need to be taken on faith (dark energy has negative pressure, and gravity is sourced by a sum of energy and pressure). The listener goes away with, at best, the impression that something profound has just happened rather than any actual understanding.

The Right Way

The right way is to not mention pressure at all, positive or negative. For cosmological dynamics, the relevant fact about dark energy isn’t its pressure, it’s that it’s persistent. It doesn’t dilute away as the universe expands. And this is even a fact that can be explained, by saying that dark energy isn’t a collection of particles growing less dense as space expands, but instead is (according to our simplest and best models) a feature of space itself. The amount of dark energy is constant throughout both space and time: about one hundred-millionth of an erg per cubic centimeter. It doesn’t dilute away, even as space expands.

Given that, all you need to accept is that Einstein’s formulation of gravity says “the curvature of spacetime is proportional to the amount of stuff within it.” (The technical version of “curvature of spacetime” is the Einstein tensor, and the technical version of “stuff” is the energy-momentum tensor.) In the case of an expanding universe, the manifestation of spacetime curvature is simply the fact that space is expanding. (There can also be spatial curvature, but that seems negligible in the real world, so why complicate things.)

So: the density of dark energy is constant, which means the curvature of spacetime is constant, which means that the universe expands at a fixed rate.

The tricky part is explaining why “expanding at a fixed rate” means “accelerating.” But this is a subtlety worth clarifying, as it helps distinguish between the expansion of the universe and the speed of a physical object like a moving car, and perhaps will help someone down the road not get confused about the universe “expanding faster than light.” (A confusion which many trained cosmologists who really should know better continue to fall into.)

The point is that the expansion rate of the universe is not a speed. It’s a timescale — the time it takes the universe to double in size (or expand by one percent, or whatever, depending on your conventions). It couldn’t possibly be a speed, because the apparent velocity of distant galaxies is not a constant number, it’s proportional to their distance. When we say “the expansion rate of the universe is a constant,” we mean it takes a fixed amount of time for the universe to double in size. So if we look at any one particular galaxy, in roughly ten billion years it will be twice as far away; in twenty billion years (twice that time) it will be four times as far away; in thirty billion years it will be eight times that far away, and so on. It’s accelerating away from us, exponentially. “Constant expansion rate” implies “accelerated motion away from us” for individual objects.

There’s absolutely no reason why a non-scientist shouldn’t be able to follow why dark energy makes the universe accelerate, given just a bit of willingness to think about it. Dark energy is persistent, which imparts a constant impulse to the expansion of the universe, which makes galaxies accelerate away. No negative pressures, no double-talk.

The Math

So why are people tempted to talk about negative pressure? As Peter says, there is an equation for the second derivative (roughly, the acceleration) of the universe, which looks like this:


(I use a for the scale factor rather than R, and sensibly set c=1.) Here, ρ is the energy density and p is the pressure. To get acceleration, you want the second derivative to be positive, and there’s a minus sign outside the right-hand side, so we want (ρ + 3p) to be negative. The data say the dark energy density is positive, so a negative pressure is just the trick.

But, while that’s a perfectly good equation — the “second Friedmann equation” — it’s not the one anyone actually uses to solve for the evolution of the universe. It’s much nicer to use the first Friedmann equation, which involves the first derivative of the scale factor rather than its second derivative (spatial curvature set to zero for convenience):


Here H is the Hubble parameter, which is what we mean when we say “the expansion rate.” You notice a couple of nice things about this equation. First, the pressure doesn’t appear. The expansion rate is simply driven by the energy density ρ. It’s completely consistent with the first equation, as they are related to each other by an equation that encodes energy-momentum conservation, and the pressure does make an appearance there. Second, a constant energy density straightforwardly implies a constant expansion rate H. So no problem at all: a persistent source of energy causes the universe to accelerate.

Banning “negative pressure” from popular expositions of cosmology would be a great step forward. It’s a legitimate scientific concept, but is more often employed to give the illusion of understanding rather than any actual insight.