Wei Dai wrote:
> > And in general when faced with a computational
> > problem that we can't solve, (1) does it always make sense to reason as if
> > there is a probability distribution on the answer and (2) how do we come
> > up with this distribution?
We don't need to assume an objective chance for these cases if we don't want to. You can use a person's subjective probability, which you find out about by asking him about what odds he would be willing to bet at.
Nick Bostrom
http://www.hedweb.com/nickb n.bostrom@lse.ac.uk
Department of Philosophy, Logic and Scientific Method
London School of Economics