The drunken buffalo theory

It goes a little something like this. A herd of buffalo can only move as fast as the slowest buffalo, much like the brain can only operate as fast as the slowest brain cells. The slowest buffalo are the sick and weak so they die off first, making it possible for the herd to move at a faster pace. Excessive intake of alcohol, we all know, kills brain cells, but naturally it attacks the slowest and weakest brain cells first.  By eliminating the weaker brain cells you make the brain a faster and more efficient machine.

The moral of the story, drink more beer, it will make you smarter...