Abductivist Refutation of Skepticism

A Refutation of Skepticism via Inference to the Best Explanation


Here's an infallibilist argument for radical skepticism:

1) Really knowing anything requires an infallible, perfect kind of certainty.
2) This requires that no mistake is even possible.
3) It seems that for us fallible creatures, perhaps this is never the case.
4) Therefore, it seems that we know nothing at all.

Here's a problem: Are propositions 1-4 themselves infallibly certain? Apparently not. Especially if nothing c...