Source:
Cracked.comMost of you probably don't gamble, or at least don't gamble a lot, for fear of losing your rent money on a single bad hand or blown point spread.
But imagine somebody came up with a simple formula that took the guesswork out of it. You could punch the information into a calculator and it would tell you your risks with any given hand or sports team. It guarantees that over the long run, you'll come out ahead. Think about how it would streamline gambling -- hell, you could create a computer program to play blackjack for you. Think about how many more people would gamble if this existed -- it'd make gambling a reliable, safe way to make some extra cash. All the risk would be gone. Everybody would do it.
Read more:
http://www.cracked.com/article_19357_6-people-who-single-handedly-screwed-entire-economies.html
Another reason for the economic crash and how it didn't involve unions or liberals.