laugh out of no where
For no reason at all today I recalled a conversation I had with my Logic Professor. I was learning Derivations and I was stuck on a problem because I had to derive something, from nothing.
Prof: …so when is A or not A True?
me: if either one is true.
Prof: right, so when is A or not A true?
me: if…um…if A is true OR not A is true.
Prof: Right. So–when is A or not A true?
(I make a sad, puzzled face)
Prof: Make a truth table
(I draw a truth table and fill it out)
Prof: and…when is A or not A true?
(I stare at the truth table, then exclaim)
Prof: Always! And what’s that called?
me: A Tautololgy!
Prof: And what’s the opposite of a tautology?
me: A CONTRADICTION!
Prof: And what can you do with a contradiction?!!
me: ANYTHING I WAAAAAANNNNTTT.
That’s all. Made me laugh…hysterically…all by myself in my room. Back to my Philosophy homework.