[ilya]

[ QUOTE ]
Nobody should know what any of those numbers are, unless it's to impress not very sharp people with useless trivia.

eastbay

[/ QUOTE ]

I don't share this point of view. If you're any good at doing arithemtic in your head, why wouldn't you want to know reasonably precise percentages for the various common situations? It's not like we're talking about ten places after the decimal point or anything.