I hate stuff like this but not for the reason that most people think: http://www.youtube.com/watch?v=ICv_0ln_yzw I hate it because people fail at critical thinking. You give some one a demonstration like this which is called a proof and they start picking apart the intermediate steps used to solve the equation. The argument is that the proof is invalid because the intermediate steps are invalid, but they are completely missing the big picture. Here is an example to illustrate my point: Proof that 7 = 5 7 = 1 + (6/2) 7 = 1 + 4 7 = 5 This is proof that 7 = 5. People look at this and say, "wait a minute... 6/2 is 3 not 4. You made a mistake therefore 7 does not equal 5." SEE WHAT I DID THAR This is such epic fail yet so many people do it. Of course my example made no attempt to disguise the glaring gap in my so-called "proof" which is of course that I proved nothing. People use this kind of shallow thinking everywhere in life and it makes me sad.