contradiction: a logical incompatibility between two or more propositions.
Kevin Drum last week:
Hell, I'm not even enough of nerd to have funny ultra-nerd stories to tell.
I once wrote a program to automate dungeon mastering tasks for a TRS-80 Model 3. It worked pretty well, but the damn computer was just too big to make this a useful idea.
[Corollary to Proposition 2:] Speaking of TRS-80s, does anyone remember the old Decathlon game for the Model 1/3? Now that was a computer game!