 Cultural evolution affected physical evolution; “it is behavior that orients selective pressure” (Monod, 162).The author then says that due to the accelerating pace of cultural evolution, it no longer affects the genome and that selection does not favor the genetic survival of the fittest through a more numerous progeny.He brings up statistics that show a negative correlation between intelligence and the average number of children per couple and a positive correlation of intelligence between spouses which concentrates them among a shrinking elite.