A herd of buffalo can only move as fast as the slowest
buffalo. And when the herd is hunted, it is the
slowest and weakest ones at the back that are killed
first.
This natural selection is good for the herd as a
whole, because the general speed and health of the
whole group keeps improving by the regular killing of
the weakest members.
In much the same way, the human brain can only operate
as fast as the slowest brain cells. Excessive intake
of alcohol, as we know, kills brain cells. BUT,
naturally it attacks the slowest and weakest brain
cells first. In this way, regular consumption of beer
eliminates the weaker brain cells, making the brain a
faster and more efficient machine. That's why you
always feel smarter after a few beers or a couple of
shots (know what I mean?)."
I have one left running incredibly fast.