Software has bugs. Lots of them. I am a master bug finder (anyone that has had me bang on their stuff likely has at least one anecdote about this.)
Today’s “special bug” is a bug in Microsoft Excel 2007. If you enter =850*77.1 into a cell you will get the result 100000. Hint – that is an incorrect answer. I tried it in Google Docs and it resulted in 65535 (the correct answer.) Hmmm – I wonder what 2^16 is? Boundary condition anyone?