Being smart isnt always successful in the evolutionary race. Swiss researchers wondered why, if intelligence is such an asset, we havent evolved to the point where everyone is super smart. Since this hasnt happened, there must be some good reasons to be dumb. Scottish researchers have discovered that it pays to be smart if youre poor, but if youre rich, it doesnt make any difference.
http://www.unknowncountry.com/news/?id=3186
