Quote:
I am a person. If you say that a giant purple panda will materialize in my underpants, those are the underpants of a person. So you have an unknown probability that the panda will appear in my underpants. So what if we stipulate that the panda will materialize in the underpants of "a person" as a thought exercise. That eliminates all of the cases where no panda materializes anywhere or where any other object materializes in someone's underpants. Since I am "a person", the probability of the panda event occurring to me is raised by the stipulation. But it is still only 1 in 7 billion with the stipulation. So the original probability had to be less than 1 in 7 billion.
Let's go back to your original statement:
Quote:
Sure. It is a binary problem. God either exists or does not exist. In the absence of any information to resolve the question, the probability starts at 50%.
You said 'God', with a capitalised G, so I'm assuming, quite reasonably I think, that you mean the Christian description of god, especially as you have expressed that belief previously and if you had meant a different god, you most likely would have specified it to avoid confusion. If you had meant a deist concept of god, I think you would have specified that too.
So I'd like you to answer what I think is the more important objection that I have to your assertion, and that is that by assigning an apriori 50% probability to the existence of 'God', you are ignoring or discounting all other possibilities. You're taking a position of '
absence of any information', in other words at this point there could be many possibilities, and then you're ruling out all but one possibility, that the Christian God exists, but you have no reason to favour that possibility over any other. The second you specify your personal god, you immediately create alternatives. In fact you don't actually have any way of knowing all the possibilities which is what makes it virtually meaningless or so close to zero as to be meaningless.
Whilst it might seem that intuitively it must be a 50/50 proposition of something existing or not existing, in this case it's not that simple. A coin flip is 50/50, but that's only because we know all the possible outcomes. What you have done is create a false dichotomy.
Or did you actually mean to say something else?