As for intelligence, the entire point of the human brain is plasticity and sensitivity to experience and novelty. There is no such thing as high intelligence — but there is such a thing as high adaptability. Since intelligence is actually a response to the environment, it’s disappointing and absurd that there are actually scientists arguing for some mysterious hard-wiring of the brain for some difficult to describe ability like “performance on IQ tests”. Don’t they realize that that’s the antithesis of what human intelligence is? You have a property that is all about interacting with complex environmental challenges in diverse ways, and you think you can capture it in a simple, constant parameter, one that doesn’t include the environment? Weird.

PZ Myers on intelligence.