Well, they outnumber our body cells.
And, there's some 3 pounds of them. So it's not surprising they have an effect! ):
Alex
"There is a cult of ignorance in the United States, and there has always been. The strain of anti-intellectualism has been a constant thread winding its way through our political and cultural life, nurtured by the false notion that democracy means that "my ignorance is just as good as your knowledge."
-- Isaac Asimov