Yeah ... I grok. My 2nd ex used to take it pretty badly when I would talk to the kids about different sized infinities. [countable vs uncountable] Of course, the phrases "countably infinite" and "uncountably infinite" *do* sound rather odd, don't they? How about we start a thread on 'favorite (or really sick) math jokes'? (1) student - "Why can't I have a beer while I work on my Calculus homework?" Prof - "Because it's not safe to drink and derive!" (2) Q - What's purple and commutes? RonL. (scroll down for answer) A - An Abelian Grape! -----Original Message----- From: Judah McAuley [mailto:judah at wiredotter.com] I've always appreciated the seemingly contradictory phrases like "bounded but infinite".