I'm going to directly contradict you here and say that IQ increases reliably: http://en.wikipedia.org/wiki/Flynn_effect http://en.wikipedia.org/wiki/Flynn_effec

I'm going to directly contradict you here and say that IQ increases reliably: http://en.wikipedia.org/wiki/Flynn_effect http://en.wikipedia.org/wiki/Flynn_effect - IQ is a relative measure that is adjusted periodically. I also don't think that IQ is a direct mapping to programming skill. I also find the suggestion that there aren't enough smart people to be able to do programming highly questionable. There are far more people who are capable but not able to pursue programming than there are people are who are not "fit" mentally.