The massive variation in human intelligence and the positive correlation between IQ and pretty much everything good implies that “Any simple major enhancement to human intelligence is a net evolutionary disadvantage” isn’t true
There’s also the saying that “correlation does not imply causation”. The brain is very complex and energy intensive; basically anything that messes much with you is going to mess with your brain. For example, a near universal symptom of genetic diseases is reduced intelligence—and I’m going to bet that low intelligence is not the cause of the genetic problem.
There’s also the saying that “correlation does not imply causation”. The brain is very complex and energy intensive; basically anything that messes much with you is going to mess with your brain. For example, a near universal symptom of genetic diseases is reduced intelligence—and I’m going to bet that low intelligence is not the cause of the genetic problem.