Why belief in god is irrational

In yesterday’s post I argued that there are conditions under which it is not irrational to believe in things for which there is no evidence at all. The example was given of extra-terrestrial life or space aliens. Since the universe is very large and very old and we know contains a vast number of galaxies, there exists a plausible argument that life, even intelligent life, could exist elsewhere in the universe that we are unaware of.

But believing in other things, such as that space aliens are buzzing around us mysteriously all the time or that dragons and unicorns and the like are roaming in some secret regions of the Earth, is irrational because to retain such beliefs requires one to create very complicated and implausible scenarios to explain the absence of any evidence in favor of them.

Similarly, the idea that that there exists an afterlife is also irrational because having that belief requires one to construct a whole superstructure of auxiliary beliefs in order to sustain that belief, and these auxiliary beliefs are themselves implausible and not supported by evidence and also depend on some kind of willful attempt at concealment of evidence, so one ends up building a whole house of cards of implausible theories just in order to sustain that one belief.

What about belief in god? Is that rational or irrational? Some have argued that it is no harder to believe in a god than that there is intelligent life elsewhere in the universe, since both have no convincing evidence in support of the belief.

But with god, the kinds of explanations for the absence of evidence that can rescue intelligent extra-terrestrial life and place it in the realm of rationality no longer apply. The problem is caused by the very qualities that religious people ascribe to god. With intelligent extra-terrestrial life, we assume that they, like us, are limited by space and time and the laws of nature. In particular, they cannot travel faster than the speed of light, which puts a real crimp on being able to get around this vast universe. After all, even if their technology was so advanced that they could travel at speeds approaching the speed of light, it would still generally take years for them to reach even the nearest neighboring star, so exploring beyond their our own galaxy becomes an enormously time consuming activity. So believing that there exists intelligent life in some remote part of the universe that is so far inaccessible to us is not an outlandish belief because the auxiliary beliefs that are necessary to sustain it (such as a very large universe and limits to travel) are supported by evidence. So the Raelians actually have a more plausible belief structure than mainstream religions.

If (hypothetically) the universe was quite small and could be traversed in a brief time, and people started invoking ideas like that extraterrestrial life existed but they were deliberately and cleverly hiding from us, then that belief starts becoming irrational.

But in the case of god, he/she is not supposed to be not limited by space and time. He/she can be everywhere all the time and has infinite powers to boot. So there is no reason at all why god should not be able to provide us with the kind of convincing evidence that I outlined earlier that would remove all doubts once and for all.

In order to overcome this problem, religious believers have to construct auxiliary hypotheses, similar to the ones that become necessary to sustain a belief in the afterlife. It is postulated that god does not want to be seen by us and has the ability to stay hidden, choosing to be seen in highly selective situations, although those situations seem to be becoming increasingly trivialized and bizarre, such as appearing in grilled cheese sandwiches, damp spots in highway overpasses, and the like.

In such situations, the absence of convincing evidence casts serious doubts on god’s existence and lifts the belief in god into the realm of irrationality. However, the faithful continue to remain devout. It does not seem that they wonder why god goes to all that trouble to provide just tantalizing glimpses. Those who do wonder about this have to, at this point and as a last resort, invoke the inscrutability argument: We cannot presume to understand why god does these things, we just have to believe that there is a good reason that is being hidden for us.

I think that this could be used as a test as to whether a belief that is sustained in the absence of evidence is rational or irrational:

• For a belief to be irrational, in order to sustain it one must argue for the existence of something that is in principle unknowable and also requires a deliberate scheme to conceal evidence of existence.
• For a belief to be rational it needs to be something that is unknown only in practice due to limitations of time or technology, but may become known in the future, and the absence of evidence is not due to willful deception by the very entity whose existence we seek.

This is not how most people seem to view rationality. People tend to view a belief is rational simply because a large number of people believe in it and if it has been around for a long time. But those two arguments really have no merit since it is quite possible for large numbers of people to believe false things for a long time.

But numbers and time seem to be the only thing that belief in god has going for it.

POST SCRIPT: Famous atheists

The online magazine MachinesLikeUs has compiled a long list of famous atheists that makes for interesting reading. There were some names on the list that were a surprise to me.

It contains scientists (Albert Einstein, Charles Darwin), writers (Ernest Hemingway, Leo Tolstoy), popular culture celebrities (Angelina Jolie, Woody Allen), political figures (Abraham Lincoln, Susan B. Anthony), and even people who are not famous (me).

Rational and irrational beliefs

Some time ago, I wrote a post wondering if the Pope was an atheist. Of course, I do not know the Pope personally and he has never made a public statement to that effect. It would not really be a good career move on his part.

My point was that the more one thought seriously about god and studied religious texts, the more likely that it was that the whole idea of there being a god and heaven would be seen to be preposterous. All the logical fallacies and lack of evidence would become transparent. Hence I argued that it was amongst clergy and theologians that one was most likely to find atheists because those people are not stupid and they do study religion in depth. The higher one went in the hierarchy, the more intellectual were the clergy and theologians and so, given that logic, I argued that the Pope was a prime candidate for atheism.
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Charlatans of the paranormal

The magician James Randi (whose stage name is ‘The Amazing Randi’) is quite a remarkable person. In addition to his day job as a professional magician, he has a secondary career debunking those whom he sees as charlatans and who use ordinary magic trickery to enrich themselves by fooling gullible people into thinking that they have supernatural powers.

I saw Randi in person when I was in graduate school where he gave a performance of his magic to the student body, and then gave a colloquium in the physics department. In each case, he first did various impressive tricks such as bending spoons and changing the time on people’s watches without seemingly touching them, and escaping after being chained and put into a sack. He ended with a talk warning everyone that what he did was due to pure sleight of hand and deception, and that anyone who claimed to be using powers such as telekinesis, spiritual energy, and the like to do such things was simply lying.
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Proof of the afterlife

Recently a friend of mine posed an interesting question. She said that none of us really know for sure if there is life after death or not, although all of us have our own beliefs. She wondered how differently we would live our lives if we could have conclusive proof either way. This led to an interesting discussion about what would constitute proof in such situations.
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The undogmatic dogmatism of scientists

In a recent online discussion about whether intelligent design creationism should be taught as part of science, one of the participants took exception to a statement by someone else that the theory of evolution is so well established that it was of no use to allow for the inclusion of intelligent design creationism. The challenger asked, quite reasonably: “On what things is there no room for debate? Of what things are we so certain that we’re willing to close the door to possibilities? If academics allow themselves to appear dogmatic about their theories, we legitimize dogmatism. We should be careful that scientists themselves do not become the new proselytizers to claim they hold absolute truth.”

This puzzlement is not uncommon and not unjustified. Seen from the outside, scientists must seem as if we either cannot make up our minds as to what we know for certain and what we are unsure of, or we are accused of cynically shifting our position for polemical advantage, sometimes arguing that evolution is a fact beyond dispute (in order to exclude intelligent design creationism as a viable competitor) while also asserting that intelligent design creationism is not scientific because it is not falsifiable. On the surface, those two positions seem inconsistent, applying different criteria to the two theories.
It is true that scientists assert that “evolution is a fact,” just as they assert that “gravity is a fact.” They also acknowledge the “theory” of evolution and the “theory” of gravity. And they also assert that ALL knowledge is provisional and subject to change.

How can all these things be simultaneously true? How can something be at the same time a fact and a theory, certain and yet subject to change? These are deep questions and ones that can lead to heated discussions since they affect deeply held core beliefs about science and religion.

These also happen to be questions that form the core of the seminar course I teach to sophomores. We discuss all kinds of things in my course including science and religion, intelligent design etc. and it is remarkable that in the four years that I have taught it, there have been absolutely no blowups or confrontations or unpleasantness, although colleagues have told me that these very same questions have caused problems in their classes. The relative harmony of my class exists despite the fact that I know that many of my students are quite religious, from a variety of traditions, and they know that I am an atheist. These personal beliefs are not things that we keep secret because they shed important perspectives on the discussions.

Perhaps the reason for the lack of friction is that my course starts with looking closely at what science’s knowledge structure is. We read Pierre Duhem, Karl Popper, Thomas Kuhn, Imre Lakatos, Larry Laudan and other historians and philosophers of science and see how it is that science, unlike other areas of knowledge, progresses rapidly because of the commitment of its practitioners to a paradigm in which the framework in which problems are posed and solved are well defined. The paradigm consists of a scientific consensus about which theory (or a set of closely related theories) should be used for analyzing a problem, rules for determining what kinds of research problems are appropriate, the kinds of evidence, arguments, and reasoning that are valid, and the conditions that solutions to these research problems must satisfy if they are deemed to be satisfactory. That complex paradigmatic framework is sometimes loosely and collectively referred to as a “theory” and students quickly realize that the popular meaning of the word “theory” as some sort of simple hypothesis or guess does not apply in the scientific realm.

As long as that paradigmatic framework (or “theory”) is fruitful and brings forth new problems and successes, it remains inviolate from challenges, and practitioners strenuously resist attempts at overthrowing it. The “theory” is thus treated and defended as if it were a “fact” and it is this that is perceived by some outside of science as dogmatism and an unwillingness to change.

But as Kuhn so persuasively argues, it is this very commitment to a paradigm that is the reason for science’s amazing success, because the scientist working on a problem defined within a paradigm can be assured a priori that it is legitimate and important, and that only skill and ingenuity stands between her and the solution. Solving such problems within a paradigm is a sign of superior skill and brings rewards to the scientist who achieves it. Such conditions ensure that scientists will persevere in the face of challenges and adversity, and it is this kind of dogged determination that has resulted in the scientific breakthroughs from which we now benefit.

Kuhn likens this commitment of scientists to a paradigm to that of an industrialist to the manufacturing process that exists to make a particular product. As long as the product is made well, the manufacturer is not going to retool the factory because of the enormous effort and costs involved. Similarly, learning how to successfully exploit a scientific paradigm involves a long period of scientific apprenticeship in a discipline and scientists are unlikely to replace a working paradigm with another one without a very good reason. Learning to work well within a new paradigm is as costly as retooling a factory, and one does not do so cavalierly but only if one is forced into it. The dogmatism of science is thus pragmatic and not ideological.

But we do know that scientific revolutions, both major and minor, occur periodically. Very few of our current paradigms have a long history. So how and why do scientific paradigms change? They occur when the dominant paradigm shows signs of losing its fruitfulness, when it fails to generate interesting new problems or runs out of gas in providing solutions. It is almost never the case that one (or even a few) unsolved problems result in its overthrow because all scientific paradigms at all times have had many unsolved problems. A few counterexamples by themselves are never sufficient to overthrow a paradigm, though they can be a contributing factor. This is the fundamental error that advocates of intelligent design creationism (IDC) make when they argue that just because evolution by natural selection has not as yet explained some phenomena, Darwin’s theory must be rejected.

To be taken seriously, a new paradigm must also promise to be more fruitful than its predecessor, open up new areas of research, and promise new and interesting problems for scientists to work on. It does that by postulating naturalistic mechanisms that make predictions that can be tested. If it can do so and the predictions turn out to be successful, the commitment to the existing paradigm can be undermined, and the process begins by which the paradigm may be eventually overthrown. IDC has never come even close to meeting this requirement.

Some people have challenged the idea that scientific theories have to have as necessary conditions that they be naturalistic and predictive, arguing that insisting they be so is to impose dogmatic methodological rules. But the requirement that scientific theories be naturalistic and predictive are not ad-hoc rules imposed from outside. They follow as a consequence of needing the paradigm to be able to generate new research programs. How could it be otherwise?

This is why IDC, by pointing to a few supposedly unsolved problems in evolutionary theory, has not been able to convince the biology community of the need to change the way they look at things. Intelligent design creationism does not provide mechanisms and it does not make predictions and has not been able to produce new research.

When we discuss things in the light of the history of science, the students in my class understand why science does things the way it does, why it determinedly holds on to some theories while being willing to abandon others, and that this process has nothing to do with dogma in the traditional religious sense. Religious dogma consists of a commitment to an unchanging core set of beliefs. Scientific “dogma” (i.e. strong commitment to a paradigm and resistance to change) is always provisional and can under the right conditions be replaced by an equally strong commitment to a new “dogma.”

Almost all my students are religious in various ways, and while some find the idea of IDC appealing, they seem to have little difficulty understanding that its inability to enter the world of science is not a question of it being right or wrong, but is because of the nature of science and the nature of IDC. IDC simply does not fit into the kind of framework required to be a fruitful scientific theory.

Morality and ‘people of faith’

Former governor of Massachusetts Mitt Romney has declared himself a candidate for the Republican nomination for president in 2008. I argued earlier that Romney’s religion (he is a Mormon) should be immaterial to whether he is qualified to be President.

But at a recent campaign event, he was challenged by someone who called him a “pretender” because as a Mormon he did not believe in Jesus Christ. Instead of answering that a person’s faith was a private affair that did not belong in the public sphere and closing the discussion on that topic, Romney responded that “We need to have a person of faith lead the country.”

Obviously I disagree with that but it also strikes me that Romney has opened himself up a can of worms because once you say that faith is necessary for being president, you have to deal with the issue of what kinds of faiths are allowed. This means that questions about the suitability of a person’s faith can become part of the political discussion. What about Islam or Hinduism or Buddhism? Are believers in those religions considered ‘persons of faith’? What about a person who has faith in tree spirits or voodoo or Satan or the Flying Spaghetti Monster. Are those faiths good enough? There is no question at all that the leaders of al Qaeda are ‘persons of faith’ by any reasonable definition of the term. So are their faiths acceptable?

A good question to ask Romney, which has been made legitimate by his response, is what criteria he uses to determine what constitutes an appropriate faith. Of course, no candidate or the media is going to discuss these kinds of questions because it would be too awkward. They know that there is no answer that can be given that does not (at best) contradict the US constitution that religious beliefs cannot be a test for public office or (at worst) comes across as rank bigotry. Both media and candidates tend to use ‘person of faith’ as code for ‘people just like us.’

As Atrios says:

It’s become vogue for politicians to make their religious beliefs, their “faith,” central parts of their campaigns. If they do so, it’s quite fair for people take a look at just what those beliefs are.

Romney says only a “person of faith” can be president. Plenty of people are going to say they don’t want a Mormon to be president. Is this bigotry, an objection to belief (or lack), or both?

Want to make personal religious beliefs a central issue in politics? Fine, bring it on. You guys can fight it out.

“We need to have a person of faith lead the country.”

“We need to have a Christian to lead the country.”

“We need to have a member of the Reformed Baptist Church of God, Reformation of 1915 to lead this country.”

Where’s the line?

The phrase ‘person of faith’ has come to mean someone who believes in some supernatural entity, but more importantly, believes in things similar to what you believe. In particular, it is used to signify a particular stance on certain moral issues.

For example, in response to an earlier post on this topic, a reader emailed me the following:

To me, without a presumption of a Divine Creator, objective morality is impossible. How will we judge anyone, if their retort is effectively, “my behavior might not seem right to you, but it’s right for me”? Unless we can state some objective ground for morality, all our law goes out the window, and anarchy must result. That conclusion seems inevitable.

I am always puzzled by the assertion that belief in a god leads to an ‘objective morality.’ How can that be squared with the blatant contradictions that are so easily observable? After all, we have all kinds of different religions that believe in a ‘Divine Creator’ and yet they all have different moralities. We even have within religions (be they Christianity, Judaism or Islam) different moralities even though they claim to believe in the same version of god. And even within each tradition morality has changed with time, so that what Christians and Jews and Muslims consider moral now is quite incompatible with what was considered moral in the past. To belabor the obvious, owning slaves and the ritual sacrificing of animals was considered quite moral at one time.

Rather than belief in a Divine Creator being the basis of morality, it seems pretty clear that people use their ideas about morality to decide what version of god they would like to believe in. In other words, ideas about morality are prior to belief in a god.

This idea that belief in a god is the basis of morality is so obviously contradicted by the facts that I can only conclude that this is an example of the power of religion to blind people to logic and reason.

Macho Christianity

It had to happen some time. I have written before about how most people’s knowledge of the Bible is a CliffsNotes version, just the sketchiest of outlines of what is says. This is convenient because it enables each group or individual within Christianity and Judaism to pretty much adopt any lifestyle and morals and values and claim that it is how god would want them to live.

But in actual practice there are some restrictions. In contemporary America, there has grown up the consensus that to be a religious means at the very least avoiding drunkenness and profanity and promiscuous sex. Dressing nicely, going to church on Sundays, being polite and nice to others, and shaking hands with strangers in the pews are highly recommended. This has to be limiting to people who like to think of themselves as ‘real’ men and want to drink and swear and run around but still want to be considered Christian. Such people are worried that Christianity is becoming a religion for wusses.
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The Failure of Intelligent Design Creationism

On Monday I attended the talk given by intelligent design creationism (IDC) advocate Michael Behe (author of Darwin’s Black Box) at Strosacker. The program consisted of a talk for about an hour by Behe followed by a 20-minute response by Professor Hillel Chiel of the Biology Department at Case.

As regular readers of this blog know, I am quite familiar with the IDC program, having read Behe’s book and other IDC literature, written about the topic extensively, and debated Behe and other IDC advocates in 2002 in Kansas and again in Michigan. So I was curious to see what new developments had occurred since my last encounter with him.

Michael Behe gives good talks and the full auditorium had an enjoyable evening. He has an engaging manner, good sense of humor, and presents his ideas in a clear way. But I already knew that having heard his talks before. What disappointed me was that there was absolutely nothing new in his talk, which was entirely a rehash of the same things he was saying five years ago. The examples he gave in support of intelligent design were the same as in his book that was published in 1996. The only new things since that book were his rebuttals of some criticisms of his book, but even those were things that he said in his 2002 talks. I recognized all the quotes and examples.
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The CliffsNotes Bible

In my house we have something called The Children’s Bible which we got for the children when they were young. I flipped through it when preparing the earlier series of posts on the historicity of the Bible and compared it with a real Bible and noticed some interesting features.

As might be expected from a book aimed at children, it skips over the gruesome details of murder, genocide, sex, incest, and so on. It also understandably omits things that are not graphic but are still truly disturbing, such as the story of Abraham’s willingness to kill his own child Isaac at god’s command. One can see how the thought that your own parent might decide to kill you on god’s command might give a child nightmares. Hardly a suitable bedtime story.

The Children’s Bible is essentially a CliffsNotes of the Bible, giving just the main outlines of the Biblical stories. What I found interesting is that what it talks about corresponds pretty much to what most adults vaguely know about the Bible. In other words, adults never seem to have outgrown the understanding of the Bible they acquire as children.
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The Bible as history-6: The Bible as propaganda tool

(For the earlier posts in this series, see part 1, part 2, part 3, part 4, and part 5.)

Few people read the Bible cover to cover. That is understandable. For one thing, it is very long. Second, the language is hard to follow. Third, it can be quite confusing with lots of characters and places involved, even more so than a Tolstoy novel. Fourth, interspersed with the stories are huge and boring chunks that are of two kinds: one consists of sequences of ‘begats’, which trace the genealogy of people, and the other consist of rules that god has said that people should live by.

So while the Bible is the best selling book of all time, it is also probably the least read. It is kind of like the religious equivalent of Steven Hawking’s A Brief History of Time.
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