[jbooth]

Sigh.

Ok, Mr. Social Darwinist. Keep taking your medium-weak correlative effect and calling it a "fact".

On correlative effects. NFC winning the super bowl leads to an increase of the stock market the following year, with a predictive power of 80%, or .8 by your notation: http://www.snopes.com/business/bank/superbowl.asp. Obviously this has weaker causal power than genetic inheritance, which likely has some. But the numbers don't bear that out. Any presumption that rich parents means smart kid is exactly that.

If you're treating a weak correlative effect as a fact, you're the one engaging in the wrong side of the "is-ought" argument, and you're doing it to invoke "ought" on a particularly noxious view, to boot.