I'm not sure how better jobs or higher education relates to biological fitness. I'm thinking a plumber can have as many children as an executive. In my experience, people who get a higher education spend more time studying in their 20s while people who don't are more likely to spend (some of) those years establishing a career and a family.
Is there really selection for intelligence? I mean, you don't want to be with an absolute tit perhaps, but I feel like once you get to an acceptable value, higher intelligence is not necessarily very attractive. It's not like nerds tend to get laid more than others!
|