Tiny gene change affects brain size, IQ: scientists

[saras]

6. We've got a long ways to go...

We'll find genes that affect bits of brain for a while, and generate all kinds of dumb theories about how everything is explained by these bits. And then we'll start noticing that multiple bits make up systems, and without the rest of a system a bit isn't as valuable, and there'll be a whole new level of complexity to the theories... and so on. Hopefully we won't do behaviorism again.

And then there's the question of whether any harmful effects are also associated with the gene. It would be a drag to exterminate some gene like this because it is also partially responsible for some genetic "disease".