But that's a different question, isn't it? We are talking about "overclocking" the brain, so to speak, not necessarily making one smarter or dumber. The specula

But that's a different question, isn't it? We are talking about "overclocking" the brain, so to speak, not necessarily making one smarter or dumber. The speculation here (if I understand correctly) is that "overclocking" the brain has a cost somewhere, but that doesn't imply that smarter people are running "overclocked" brains per se.