Inborn intelligence, and implications.

Right now, there's a taboo in our society on mentioning inborn differences of intelligence and how well it means an individual might lead their lives.  Between individuals, it's less of an issue, as differences between individuals is accepted as a fact of life.  Differences between races are more of a taboo, and even so much as admitting it in passing could get you fired, or your career destroyed.

What would happen if our society ever admitted that intelligence was one of the most reliable indicators of future performance?  What would it mean?

Would they start channeling more educational rescources toward the smart kids in order to raise overall human acheivement?  Or would they start channeling more rescources toward the less intelligent kids to even the playing field? Would they prevent dumber people from having kids, by only giving reproduction liscences to the smartest of people? 

And what kind of changes would have to happen to cause a scenario to come about?

Being intelligent doesn't indicate performance so much as being smarter than everyone else does.  Successful people earn their positions by knowing what other people don't, and selling that expertise in one way or another.

If the less intelligent people are raised in education to make them 'equal', the advantage of intelligence is markedly reduced.  Except for scientific research and the like, there's no real advantage to having a bunch of intellectuals around.