It would be a grave error to assume that these effects remain additive, without side-effects, when you combine them all.
It’s my (weakly held) belief that some of the human intelligence genes act through lowering the happiness set point. Unhappy more often —> more problems to solve —> more practice solving problems —> better at solving problems. If true, even for a smallish subset of the human intelligence genes, then stacking that would be both horrifying and seems intuitively to me like it would fail past a certain point.
Evidence: ~all the cognitively-handicapped-from-birth people I’ve known are very happy on average, and the opposite holds on average for the unusually-smart folks I’ve known.
It’s my (weakly held) belief that some of the human intelligence genes act through lowering the happiness set point. Unhappy more often —> more problems to solve —> more practice solving problems —> better at solving problems. If true, even for a smallish subset of the human intelligence genes, then stacking that would be both horrifying and seems intuitively to me like it would fail past a certain point.
Evidence: ~all the cognitively-handicapped-from-birth people I’ve known are very happy on average, and the opposite holds on average for the unusually-smart folks I’ve known.