Okay, for not having a "formal" background in Philosophy, which as far as I'm concerned doesn't amount to squat (it's not a prerequisite in order to think), could somebody please explain what this means? I suspect it has something to do with how do we know what we know, and how do we ascertain whether it's true or not. Is this anywhere close? Or, is there more of a "formal process" involved? Any and all replies are welcome. Thanks!