twofish-quant said:
But what constitutes "evidence".
For a classification of evidence to lead to the truth, that classification must lead to reliable results. That is to say, any sufficiently-specific statement about reality that you might make must be either true or false (another way of stating this is that it is possible to add conditions to any ambiguous statement so that it is definitively either true or false, even if we don't know which). This is basically a tautology.
Given this tautology, we can then conclude that if we are to accept a classification of evidence as being reliable, then it must consistently produce the same answers to the same questions. If it does not, then it is a bad form of evidence.
This fact is, fundamentally, why science relies so heavily upon verification of results. And it's also why there isn't any evidence for any god: the types of evidence that people attempt to use to support their beliefs are the same (revelation, personal experience, tradition), but they come to wildly different conclusions about the specifics.
twofish-quant said:
First of all physicists do not *prove* anything. Mathematicians *prove* things. If you are using the word "proof" to mean anything other than a series of logical mathematical steps, you are using language in a an unforgivably sloppy way.
He's using it in the way the word is used by the general populace, however. Now, I don't do this personally, but arguing over semantics doesn't get into the meat of the article. He is quite specific about the definition that he is using in the blog post.
twofish-quant said:
Last year I thought the big bang happened. May be next year I'll change my mind. If the existence or non-existence of God were really subject to scientific evidence, it would be tentative and uncertainty. Yesterday, I thought God existed, maybe tomorrow I'll see something that will make me change my mind.
I think it's typically only people that believe in a god that think that somehow the question, "Does a god exist?" is categorically different from other questions about the nature of reality. I don't. And that's what the thrust of that article was: it isn't categorically different, and so we should apply the exact same thought processes that have proven reliable time and again with other questions to the one about whether or not there is a god (or gods, for that matter).
See, I once believed in the Christian God. Then, as I learned about science and how to do science, I started applying those same thought processes to my religion (in particular after I noticed that my religion was making some claims that were distinctly opposed to reality). When I did so, I found that it was all bunk, and I really had no valid reason to believe any of it.
twofish-quant said:
But I don't know of anyone that thinks of the existence of God in the same way that people think of the fine structure constant, which suggests to me that people *aren't* using scientific means to come to their conclusions, which is perfectly fine as long as people admit it.
It's only perfectly fine if you're okay with being wrong. The only limitation placed upon scientific thinking is whether or not it is fallacious. Therefore there are only two types of reasoning: scientific reasoning (i.e. non-fallacious reasoning) and fallacious reasoning.
twofish-quant said:
Also, there has been a *lot* of philosophy that has contributed to the understanding of God, and even if you don't believe that God exists, it's useful to understand belief in God as a social phenonomenon. One thing that convinces me that God cannot be proved through rational means is a brilliant theologian named William of Ockham. You may have heard of him.
I find this human obsession with gods to be rather interesting. But seriously, if you're not going to demonstrate the existence of a god through rational means, then that's extremely good reason not to believe in a god.