Posted: Dec 17, 2011 5:44 am
by Mick
jlowder wrote:Like all inductive or evidential arguments, appeals to possibility do nothing to undermine to the claim about probability.

I'm not too sure if you meant to generalize this entirely. However, I should say that appeals to possibility could indeed undermine the claim about probability. Inductive or evidential arguments from evil could be rendered impotent with appeals to ontological arguments.

1. <>(<>{}(<>G--><>[]G) & <>G)
2.<>{}(<>G--><>[]G) & <>G

Both 1 and 2 are possibility claims which are logically equivalent to []G in some modal logics.