Quote:
Originally posted by Pragma
I think he realized that, Giltwist, and that was the point of the joke - people who don't understand the math go "... whoa", and those of us who understand math shake our heads and laugh. 
A professor of mine did a formal proof in class of 2=1, got most of the class believing that the laws of math were that easily broken. Then he told them the truth.
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Actually, there's nothing strictly wrong with "dividing by zero". In other words, it's quite possibly for 0 to have a multiplicative inverse and, yes, that does imply that 2 = 1, if you define 2 = 1 + 1. However, if you were to assume that 2 != 1, then there can be no multiplicative inverse and, hence, no "division by zero".
How's that for exercising logic?