'Politicians (and other human beings) are emotional fools'

Both Parties Ignore the Facts (Slashdot) (Original Article)

"The test subjects on both sides of the political aisle reached totally biased conclusions by ignoring information that could not rationally be discounted, Westen and his colleagues say....
The study points to a total lack of reason in political decision-making."

And, on a totally unrelated note, apparently (from the same website) adult brain cells do keep growing.