There does seem to be selection with respect to functioning in modern society, but I'm not sure there's a strong correlation with expected functionality and exp

There does seem to be selection with respect to functioning in modern society, but I'm not sure there's a strong correlation with expected functionality and expected number of children. In fact, I wouldn't be surprised if there's a negative correlation. In addition, because of how interconnected our society is a selection process individually would be enough. It would have to also be powerful enough to stop the memetic heritability of "superstimuli" memes.