# Basic math and mechanics are flawed. Be very careful with building anything.

Three guys on a business trip decide to get a hotel room. It is $30 a night. Each pay 10$ and they get their room. The Hotel Manager realizes that it’s a sale event and the men should have only been charged $25. He gives an employee 5 one dollar bills to give back to the men. The employee is a thief and keeps two dollars. The men get $3 back. Now each man has spent 9$ instead of $10. 3x $9=$27. The thief kept 2$. 27+2= $29. Where did the other dollar go?

That it is. Better yet buy 2 cans of corn. Put one on a counter top standing upright. Place the other on the ground on its side. Measure the distance between them. Then lay the one on the counter on its side and the one on the floor place upright. Should be the same distance right? Simple mathematical assumptions can destroy larger theories.

The maid got the dollar.... bought peppermints and ate them all.

This mathematical riddle is really famous, but it brings up a fallacy that people constantly fall into. The extra dollar doesn't disappear, rather people are looking in the wrong place. Here is a good webpage you can read to understand the problem!

http://mathforum.org/library/dr...iew/57916.html

Here is a good paragraph from it for people who don't wanna click the link.

"The men have collectively paid 27 dollars for the room, which is obvious, since the bellboy took $2 and the actual cost was $25. And so we see that there is no missing dollar, because the $27 the men paid is a debt, written as a

negativenumber, and the $2 the bellboy took is a profit, which is apositivenumber, and the sum is not $29, but a debt of $25, which was paid to the deskman."Math isn't wrong, humans just can't do it correct sometimes