Absolute Certainty

[DeadlyGambit]

Does it exist? Is anything absolute?

My friend and I were debating this a couple weeks ago, and lately I've been thinking about it alot. My friend argued that NOTHING is absolute. That is, we can never be certain that something is undoubtedly and absolutely true. However, I think that some things can be known with absolute certainty, namely those that are in the realm of mathematics and deductive logic. For example, 2+2 ALWAYS equals 4, or "All A are B and All B are C, therfore All A are C". These things we know with absolute certainty, right? Granted these examples seem, I don't really know how to put it, far removed from everyday reality. Like looking at an argument form such as the one above and saying it is absolutely true seems far different than observing something in the natural world and being able to say the same thing about it. I'm not quite sure of what I'm trying to say here [img]/images/graemlins/confused.gif[/img].

Anyway, what are your thoughts on absolute certainty? Can we ever know anything for sure?

-Matt