A promising PhD candidate was presenting his thesis at his final examination, in front of his supervising professor, fellow physicists, and a mathematian. He proceeded with a derivation and ended up with like: F = -m a.
Embarassed, the student coughed nervously and said, “I seem to have made a slight error back there somewhere.”
The mathematician replied, “Either that or an odd number of them.”
I don’t get it :-(
Comment by sizely kind — 01.5.10 @
If he had made two mistakes, supposedly the minus would cancel out(-1 * -1 = 1). So if he made more than 1 mistake, for the minus to be there it should be an odd number :P
Comment by A^^ — 03.5.11 @