Can theists be rational?

Can Theists be Rational? (let's see... uh-oh)

Sorry, but browsing I don't see any discussion of "rationality" as I understand it, so I'll have to rudely pop in here to respond fresh to the OP.

Rationality relates to reason, but is not the same as reason; and reason is not the same as logic. Logic comprises deduction (rules of inference, evaluating arguments' validity), induction (rules of generalisation, evaluating arguments' soundness), and arguably abduction (rules of hypothesis, evaluating arguments' relevance). Logic is the formalisation of reasoning. Trivially, if this is the sum extent of reason and rationality, then anyone who understands the rules can be rational.

But rationality as typically understood is a property not so much of arguments but of claims and beliefs (arguments advanced as most probably true, or absolutely True). A belief maintained because of anything other than the likelihood it is true is said to irrational. So rationality is the property of beliefs maintained solely because they are most probably true (best describe whatever the belief refers to). Rationality is reason properly applied.

So what is it for a claim, a belief or system of beliefs, to be rational? For rationality: beliefs and claims require justification, usually in the form of argument chains (combining the different logics above). Furthermore, philosophy uses dialectic: fair debate, weighing arguments for and against a claim. Anyone can form an argument. The real measure of rationality is how well one evaluates the arguments for and against, in terms of soundness (are the premisses likely) and legitimacy (are the inferences correct).

Note: in classical philosophy, reason and passion are opposed. While the relationship is probably more complicated than simple opposition, it still seems fair to say that strong emotion interferes with reason ("calm down, let's reason this out"). Proper evaluation calls for a high degree of emotional detachment. Reason works best with calm.

Additional points: one shouldn't confuse rationality and irrationality with good and bad. One can argue irrationality is better than rationality in certain situations. Rationality is probably best construed not as a binary value but as a gradient: a belief is more or less ir/rational than another.

Some Obstacles to Rationality:

Ego: easy for an argument to become a contest that can be won or lost, involving pride, esteem.

-- This will be an obstacle for everyone I think (you'd have to have a pretty big ego to believe otherwise).

Identity: the argument is part of who you are, your loyalties and associations.

-- In terms of god arguments, this looks like an obstacle for everyone except the strict agnostic, according to the strength of the emotional commitments to positions for and against.

Dependence: how much does the adherent depend on the beliefs for happiness, meaning, etc?

-- Where a belief system satisfies an emotional need that it would be difficult or impossible to satisfy otherwise, the believer can become emotionally dependent on it, and fearful, even resentful, of alternatives. In the case of a theism that promises ethical certitude, eternal bliss to believers and/or terrible punishment to non-believers, the possibility of irrational attachment must be quite high indeed. This sort of dependence is by no means limited to theists; however, where the consequences of belief and non-belief are, for the believer, seen as a matter of bliss and torment, life and death, one should think it extremely difficult to evaluate arguments pro and con with much rational detachment.

Absolutes: does the belief system claim access to Truth?

-- Every belief system that depends on certain and complete knowledge of reality is irrational in that respect: reason, as it's understood within philosophy, can only guarantee the absolute truth of systems of deductive logic, not belief systems. Belief systems that claim access to Truth then must rely on something beyond reason... either revelation, or arguments to a necessary hypothesis. The more revealed Truths a system is based on, the more basically irrational it is, and the more justification it requires to make the revealed Truths approach rationality. Reason for the Truth claimant is to argue that each revealed Truth is a necessary hypothesis, comes as close or closer to necessity than counter-claimants, or is at least plausible, or at the very least possible. This is metaphysics. The rationality of metaphysical arguments is notoriously hard to evaluate, as it's hard to assign probablilities to the existence of unknown or unknowable entities and processes. I think all one can say is the more a belief system relies on revealed Truth, the more it opens itself to charges of irrationality; perhaps the more likely that it is irrational (Occam's razor applied to metaphysics).

Authority: does the belief system claim infallibility for some of its principals?

-- This usually relates to the source of revealed Truth. If a principal has access to Truth, then the principal must be a final authority, and any appeal to her authority can only be questioned on grounds or interpretation, not authority. (Absolute authority shouldn't be confused here with expertise, where one contracts limited authority to a professional.) Absolute authority assumes access to absolute Truth which ultimately does not require rational justification (in other words, one is irrationally predisposed to accept the claims of the authority before evaluating them). This irrational predisposition is the obstacle authority presents for rationality. To the degree that one adheres to absolute authority, one is liable to limit rationality, the adherent deferring some or all evaluations to the authority.

Obedience: does the belief system encourage strong belief, orthodoxy; discourage doubt, dissent?

-- This is a glaring obstacle to rationality and main source of the charges of irrationality against many religions, and theism where it attaches itself to those religions. Some defenders of religions that advocate this sort of obedient faith argue that faith is necessary to revelation: until one swears obedience to god, revelation is withheld by god (the "leap of faith" argument); since faith is superior to reason as a source of knowledge, it is reasonable to have faith. This is not an argument that can be evaluated by reason (see Kierkegaard's paradox), so it must be labeled irrational by reason. Therefore, any theism which attaches to a belief system which endorses such faith, is irrational; as are theists who invoke faith [in revealed Truth].

Anyway, that's a lot of hoohah and falderal, but: can a theist be rational? Well, reasoning from the above (and assuming it rational), I have to say: "yes." With the caveat, however, that due to the higher emotional investment many forms of theism endorse and/or induce, it is often more difficult for these many theists to be rational with respect to their belief system. It is surely not an easy thing to measure; ascertaining emotional involvement seems as much psychology as philosophy; ultimately, it's up to the believer to justify to himself what reasons he has for the beliefs he holds, or whether that even matters; while those of us who believe in the value of rationality can only hope, perhaps irrationally, that it does.
 
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Sorry, but browsing I don't see any discussion of "rationality" as I understand it, so I'll have to rudely pop in here to respond fresh to the OP.

Rationality relates to reason, but is not the same as reason; and reason is not the same as logic. Logic comprises deduction (rules of inference, evaluating arguments' validity), induction (rules of generalisation, evaluating arguments' soundness), and arguably abduction (rules of hypothesis, evaluating arguments' relevance). Logic is the formalisation of reasoning. Trivially, if this is the sum extent of reason and rationality, then anyone who understands the rules can be rational.

But rationality as typically understood is a property not so much of arguments but of claims and beliefs (arguments advanced as most probably true, or absolutely True). A belief maintained because of anything other than the likelihood it is true is said to irrational. So rationality is the property of beliefs maintained solely because they are most probably true (best describe whatever the belief refers to). Rationality is reason properly applied.
Thank you. Well put. The enitre post.
 
JoeTheJuggler;4319960]I'm a pretty smart and well read guy, but I have no background in philosophy at all.
Maybe that's not a bad thing - and perhaps it is why your posts are so clear, common sensical and straightforward.:)And I have never, to my regret, studied Philosophy, although I am reading (having read to me) two books called 'Coffee with Plato' and 'coffee with Aristotle'.
Do you know of Jon Lanman? He's working on a thesis at Oxford on disbelief. He's here in St. Louis just now, but your son should probably meet him when he's back there.

Check out the sticky thread at the top of the Religion subforum. That's Jon. He's got a jref account (and it's somewhere in that thread), so you can contact him. Elsewise, PM me and I can pass along his e-mail address or give him Simon's.
Thank you. I will do as you suggest and pass the information on to Simon.


:blush: you flatter me, twinkle toes!

(And I loved seeing your pix from Tim's party though I'm wildly jealous for being on the wrong continent... I hope you make it to TAM (my hometown) this year.)
I'd certainly love to be there, but it needs quite a bit of thinking about!

ETA the bit about Philosophy, having read blobru's eloquent #424.
 
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Rolling a number other than 1-6 on a six-sided die does not have a 0% probaility (even assuming the die is numbered 1-6). It is possible for the numbers to change on the die as soon you toss it (e.g., through sudden migration of atoms, God's intervention, a capricious alien, etc.).

What was the point in writing this?

Meaningless gibberish, which is probably why everyone else ignored it.

I didn't, because it fits perfectly with a discussion on rationality; you want irrational?

Your post is a classic example.
 
Thank you. Well put. The enitre post.

Thanks. :) It's a tough question; I really had to think about it, which, in my case, is very often a recipe for irrelevance, disaster and heartache.

Oh, have inserted one more obstacle to rationality I'd forgotten earlier: "Dependence" [see above].

+, even if 'irrational' to say so 4 days in: :w2:
 
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It assumes it can, not that it does?

Nope.

There's no room in that statement for non-existence.

If the thing doesn't exist, the probability of its existence is 0%. (It is NOT 5%). By asserting that there is a 5% probability of something existing, you are precluding the possibility that the probability is 0%. That is, you are assuming that non-existence (which gives you a 0% probability) is out of the question, yet that IS the question.

The probability of something existing (which is unknown when the question is whether or not the thing exists) cannot be both 5% and 0%.

See, this is the problem with circular reasoning. When the question is whether or not something exists, you cannot assume a probability of existence without begging the question.

It would be the same (as I've said repeatedly), if I made an argument that started of with the assertion of a 0% chance of the thing's existence, and proceeded to the conclusion that the thing does not exist. Surely you would agree that that argument is circular, right?

Why would you reject an argument that wanted to postulate 0% probability of existence but not one that postulates 5% probability of existence? Both of those probabilities assume more knowledge about the question of existence (the question being argued) than we have.
 
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Rolling a number other than 1-6 on a six-sided die does not have a 0% probaility (even assuming the die is numbered 1-6). It is possible for the numbers to change on the die as soon you toss it (e.g., through sudden migration of atoms, God's intervention, a capricious alien, etc.).

The only propositions given 0% probailities are logical contradictions (or possibly false math statements).
I'd really like to play poker with you some time.

In my universe, when you roll a die there is not one ever instance in all the millions and bajillions of instances when people have rolled "the bones" in all of history where a number has come up that did not exist on the die before it was rolled.

If you think that's possible, then it's pointless discuss probability with you, because all the numbers are meaningless. Getting a 3 on a normal die would not have a probabilty of 1:6 in your world. It would have a probability of 1:infinity since there is no limit on what numbers could magically appear on the die. Don't you agree with this?

If there's not a 0 probability of getting a "36" or a "Q" or a frog on a normal die, then there is also not a 1:6 probability of getting a 3 on a normal die, and it's pointless talking about probabilities with you.

Malerin, what you're talking about is NOT rational thinking. It is magical thinking.
 
I'm terrible at statistics, but just so I understand, is the argument that any non-zero answer for the probability of something existing already assumes existence? So, a 1 in a million chance assumes existence because it is not a non-zero probability? Or, in other words, for existence, the answer is either "yes" or "no", so it makes no sense to speak of probabilities?
I'd agree with that. And I think that's a useful approach. (Though it means the same thing I've been saying, that assigning ANY probability to the existence of something makes assumptions about its existence.)

The question is "does God exist?" It's a yes/no question. If you start with the assumption "maybe" and end with "maybe" it's just as circular as starting with "yes" and ending with "yes"--and fails to answer the question anyway.

If God does not exist, the probability of God existing (or creating the universe) is 0.

In the Forster and Marsten argument, 0% probability is ruled out by the premises. That is, the question has been begged.
 
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Sorry, but browsing I don't see any discussion of "rationality" as I understand it, so I'll have to rudely pop in here to respond fresh to the OP.

Did you see the posts where I was trying to steer the discussion a bit off of this logic stuff?

I think my question has to do with rationality as you've eloquently described it.

My question takes the thread title not as "Can theists be rational about their belief in God?" but "How is it that theists can be rational about other things when what they claim is one of the most important things in their lives is taken on faith?"

Really, how do you believe what the minister tells you about what God wants, but manage not to fall for every Nigerian scam in your junkmail box?
 
Meaningless gibberish, which is probably why everyone else ignored it.
This is my off season, so I've got loads of time to waste.

I'm supposed to be cleaning and organizing this tremendous, filthy mess in the basement. For some reason, it's more appealing for me respond to posts like Malerin.

And, I admit it, I take a small satisfaction from pointing out what's wrong with posts like that. It's a character flaw, I know.

Anyway, I'm taking a little getaway tomorrow to a B & B for a couple of days, so maybe then things that deserve to be ignored will be ignored! :)
 
Here's the problem with the die analogy.

It's a really big die. We don't know how many sides it has, but it's probably at least several thousand. Nobody's seen the whole thing, we just get a quick glimpse of the side that lands 'up' each time it's rolled (and even then, we're not sure that it's the whole side). We've rolled the die billions of times and kept track of the numbers that come up. We haven't seen any new ones for quite some time. Every once in a while someone claims to have seen a new number, but it only seems to happen when nobody else is looking. Occasionally, we get a better look at one of the old numbers and it turns out that it was part of a longer number. We also occasionally discover that what we thought was two separate numbers was two different partial glimpses of one number. A zero has never come up.

What is the probability that you will roll a '0'?

Linda
 
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What was the point in writing this?

Meaningless gibberish, which is probably why everyone else ignored it.

I didn't, because it fits perfectly with a discussion on rationality; you want irrational?

Your post is a classic example.

Let E= "A square circle exists"
Let H stand for any hypothesis

Pr(H/E)= Pr(H) x pr (E/H) / Pr(E)
Division by zero. Sqaure circles can't exist

Let E= "2+2=4"
Let H stand for any hypothesis
Pr(H/E)= Pr(H) x pr (E/H) / Pr(E)
Multiplcation and division by one. A hypothesis is
never confirmed by logically necessary evidence.

Therefore, evidence with epistemic values of 1 and 0 yield no results using conditional probability. The only kinds of evidence with
values of 1 and 0 are logical truths or logical contradictions. An alien changing the number on a die mid-throw is not logically contradictory, nor is the remote possibility of the atoms on the die rearranging themselves so that a 6 becomes a 7.
 
It is a bit ironic (given the title of the thread) that the theists posting here are the ones who understand conditional probability and epistemic belief values while some of the atheists haven't a clue.
 
I'd really like to play poker with you some time.

Oh, god yes. My wallet is just itching at some of this stuff.

What time do these guys play?

This is my off season, so I've got loads of time to waste.

Well, you haven't wasted much here, with bloody good stuff all the way. I feel that the rest of us heathen types are just sitting here cheering you on.

Have a great break!

Here's the problem with the die analogy.

There is no problem with the die analogy, because dice have six sides.

If you want to introduce a really silly hypothetical, feel free, but it won't make a blind bit of difference to the real world.
 
This is basically the Bayesian vs. Frequentist argument over what a probability is.

Frequentists consider a probability (distribution) to be valid only if it can be obtained from a sample.

Bayesians are more relaxed and believe a purely subjective probability (distribution) is a valid starting point.

"Relaxed" sounds pretty generous! Pull a number out of thin air (no calculations and don't even say what that number actually means), and then do math with it to "prove" something is "relaxed" to the point of illogic.

Seriously, in this type of "probabilty" what does it mean to say there is a 1 in a million probability for the existence of God? A million whats? Is it sort of like a weatherman's prediction (ignoring any calculation for how he came up with it)? If there's a 50% chance of rain tomorrow, it means that on days when conditions are as they are now, we expect that 50% of them will have rain the following day. So does the God one mean that when we've got universes like this one, we expect that in one of them out of every million of them, God exists?

And doesn't that assume the existence of God (in some universe) the same way the weatherman's prediction assumes the existence of rain?

If you can live without "million" corresponding to anything, and say it's really only talking about God in our universe, you've still got the problem that I mentioned. If God does not exist, the probability God exists is zero. The Forster & Marsten argument denies the possibility of the probability being zero in the premise.

Even for Bayesians, there surely must be a difference between talking about probabilities of events and probabilities of existence (when you're making an argument on the question of existence).
 
Here's the problem with the die analogy.

It's a really big die. We don't know how many sides it has, but it's probably at least several thousand. Nobody's seen the whole thing, we just get a quick glimpse of the side that lands 'up' each time it's rolled (and even then, we're not sure that it's the whole side). We've rolled the die billions of times and kept track of the numbers that come up. We haven't seen any new ones for quite some time. Every once in a while someone claims to have seen a new number, but it only seems to happen when nobody else is looking. Occasionally, we get a better look at one of the old numbers and it turns out that it was part of a longer number. We also occasionally discover that what we thought was two separate numbers was two different partial glimpses of one number. A zero has never come up.

What is the probability that you will roll a '0'?

This is pretty much the same scenario I posted (although I used the number "3" not knowing whether or not a 3 exists). Also my poker analogy when we don't know whether the King of Clubs exists (if I'd added in that we've played many hands with this deck of cards that we don't know the composition of, and we've never seen the King of Clubs).

If one assigns ANY probability to rolling a "0" (that is, if anyone answers your question with anything other than "we don't know"), he is making an assumption about the existence of "0".

ETA: OK, other than "we don't know", we could answer it thusly: "If '0' doesn't exist, the probability of '0' is 0. If it exists, the probability is an unknown value greater than zero but less than 1."

If you use that assumption to argue for (or against) the existence of "0", the argument will be circular.
 
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It is a bit ironic (given the title of the thread) that the theists posting here are the ones who understand conditional probability and epistemic belief values while some of the atheists haven't a clue.
No. Your statement is ironic!

I noticed you've not answered my question. On a regular die, what is the probability of rolling a "3"?

If it's 1:6, then you're admitting that magical appearance of an unknown number of other "possible" values is really impossible.

If you think the value is 1:infinity, then it's clear you have no grasp of reality and how probability pertains to reality. Ironic that you'd accuse anyone else of ignorance.

Please answer. What is the probability of getting a "3" on a regular die?

Remember, you claim the probability of getting a "pi" or a "27" or a "horse" on a regular die is not zero because the number of possible outcomes is infinite.
 
I'd agree with that. And I think that's a useful approach. (Though it means the same thing I've been saying, that assigning ANY probability to the existence of something makes assumptions about its existence.)

The question is "does God exist?" It's a yes/no question. If you start with the assumption "maybe" and end with "maybe" it's just as circular as starting with "yes" and ending with "yes"--and fails to answer the question anyway.

If God does not exist, the probability of God existing (or creating the universe) is 0.

In the Forster and Marsten argument, 0% probability is ruled out by the premises. That is, the question has been begged.


Well, I wasn't making a statement, only asking questions.

Isn't this an exercise in a posteriori knowledge, though, an issue with the universe itself? In that situation probabilities are never zero unless we have perfect knowledge. We can speak of probabilities that are next to nothing and so are essentially zero but cannot reach zero because our knowledge is not perfect.

The only actual zero probabilities occur with logical contradictions.

ETA:

Or, here's another way of looking at it. If those equations provided a zero probability, that would mean that there is a way to prove the non-existence of God. Since no one has been able to do this, it should be the case that those equations cannot equal zero. The non-zero answer does not mean that God must exist in some fashion, only that we cannot prove that God does not exist.

By the way, there should also be no way to get to 100% in that analysis. If there is, then there is a problem with it.

ETA ETA:

Though there may a problem with the whole idea of logical possibility.
 
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But rationality as typically understood is a property not so much of arguments but of claims and beliefs (arguments advanced as most probably true, or absolutely True). A belief maintained because of anything other than the likelihood it is true is said to irrational. So rationality is the property of beliefs maintained solely because they are most probably true (best describe whatever the belief refers to). Rationality is reason properly applied.

Nice post.

So what is your opinion about beliefs for which there is little or no evidence, or for which the evidence doesn't clearly point one way or another? Does the rationality of one's beliefs depend at all on the strength of those beliefs, or is it always irrational to even hold a mere opinion about such beliefs until there is a preponderance of evidence?

-Bri
 
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On a regular die, tossed fairly, the probaility of any number is approx. 1/6. That is frequency probability, as everyone has been trying to tell you. Epistemic probability has to with how likely propositions and beliefs are by assigning them belief values between 0 and 1, with agnosticism being .5.

In other words, 3 has a 1/6 chance of coming up (frequency probability) on a fair die. If I roll the die a million times my belief that it is a fair die will be
.99999 (conditional probaility based on the evidence of a million die tosses). you could prove this with Bayes Theorem.

If you keep applying frequency probability to CJ's argument, you'll become hopelessly confused, as several people demonstrably are. If you understand conditional probability, you can evualate the argument correctly.

It's not like this is radical stuff.
 

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