Red, theory; black, fact.
That will do for starters. Sandwich maker, pro singer, DJ, bureaucrat, electrician—I couldn’t do any of that. We are a society of specialists, and such societies feature differentiation with integration. So, how far back does this go? At most, nine millennia; about 450 generations. Time enough for evolution? Doesn’t matter; we want direction here, not distance.
Contemporary natural selection of humans will therefore reward differentiability and integratability.
Differentiability: vocational choices often begin in childhood with hobbies, and there is a certain frame of mind associated with hobbies called “flow.” I therefore suggest that we are being selected for a susceptibility to flow.
Integratability: society is held together by our ability to coordinate with others, and the key ability here is thought to be “theory of mind,” or the ability to infer the mental states of those with whom we interact. Likewise, we are being selected for theory-of-mind ability.
I would like to suggest that there is something higher than theory of mind, which not everyone possesses at this time: extended theory of mind: inferring the mental states of those not present, and whose very existence is itself inferred. A society strong in this trait will appear to be communicating with one another through solid walls, as if by ESP.
Who are these Chosen? Probably military generals, politicians, and the executive class. Go figure.
However, the human cranium is probably as voluminous as it can get and still allow childbirth, so the gray matter subserving the new ability will have to be included at the expense of some other, preferably obsolete ability, like accuracy in spearing game animals.
So challenge your mayor to a game of darts and see how he does. This theory is falsifiable.
