Jorum said:
In my opinion a great deal of the anthropic principle is based upon lack of imagination and a supposition that our kind of life is the only kind.
The anthropic principle states in essence:
"if any of a hundred parameters were to change by a small amount life would not be able to exist"
Of course what they are really saying is:
"if any of a hundred parameters were to change by a small amount the forms of life found on earth would not be able to exist"
I don't think you've got this entirely right. As I heard it, scientists say if the explosion for the big bang had been just a tiny bit less powerful, everything would have fallen back in on itself, and if it had been just a tiny bit more powerful, then no suns solar systems or planets would have ever formed.
Similarly, if the universe wasn't arranged in this bizarre way where time and space appear to change in order to support the principle that nothing can move away from anything else faster than the speed of light, you wouldn't be able to see any starry firmament, and the sky would look pretty messy.
That said, I do agree with you in thinking it's some sort of anthropocentrism to think that organic life is the only kind of life that can exist.
But thinking about the anthropic principle, or the subject of the thread, I think it's an interesting subject. And I support both versions of the argument.
On the one hand, you have people saying, it's fantastically unlikely that the universe and we exist. And on the other hand, you have people saying, no it's not unlikely at all, because we do exist, and so the probability of the universe being the way it is, when we're here to observe it is 1, it's a certainty that it's this way. And they're both true.
It's a bit like - it's very unlikely that Iran will win the world cup. But if they did win, then there's a question about whether their win was still unlikely. On one argument, it just proves that everyone underrated Iran, and actually, since they did win, their win was actually quite likely, or even a certainty. Certainly, once Iran won, their win would be a certainty. And so would it still be true to say, actually it was very unlikely .
Or, if you drew a straight flush in five card draw. Well it's fantastically unlikely, but equally, in the case when it happens, it's actually a certainty. As the cards just were in that order, when they came to be dealt.