Logic

How about this for a topic: does classic logic (not Aristotle's (syllogistic), I'm talking Frege/Russell: modus ponens, disjunctive syllogism, etc) truly capture the way that humans reason? Another question might be: does it capture the way we ought to reason (is it even more fundamental than human reason (lots of people don't seem to get disjunctive syllogism, or don't believe in it))? I'm at work and will opine later, but thought it might be something to get us going.