There was a theory floating about on Twitter about apparent European noble practices regarding child birth.
Basically, nobles that failed out of society for whatever reason (drunkards, second borns, etc.) would intermix with the lower classes. This would propagate out "superior" genes that may have aided increases in intelligence over time.
This is quite controversial but it is thought provoking.
Basically, nobles that failed out of society for whatever reason (drunkards, second borns, etc.) would intermix with the lower classes. This would propagate out "superior" genes that may have aided increases in intelligence over time.
This is quite controversial but it is thought provoking.