I see mithawk and Bostonian have got their polititroll hats on today.
At least Bostonian isn't being subtle about his social Darwinism this time. That bit about wealth being related to intelligence is HILARIOUS. It's almost as if he's never heard about gifted underachievement. If only there were a place on the internet where he could talk to experts on the subject, and individuals with real-world experience...
From the Wikipedia article on "intelligence quotient"
http://en.wikipedia.org/wiki/Intelligence_quotient :
"The American Psychological Association's 1995 report Intelligence: Knowns and Unknowns stated that IQ scores accounted for (explained variance) about quarter of the social status variance and one-sixth of the income variance. Statistical controls for parental SES eliminate about a quarter of this predictive power. Psychometric intelligence appears as only one of a great many factors that influence social outcomes."
One-sixth of income variance means that the correlation of IQ and income is about 0.4, since 0.4^2 = 0.16 which is about 1/6.
A 0.4 correlation is not negligible.
