“Genetic bottlenecks do tend to weed out the stupid”
If true, then Muslims wouldn’t be so numerous.
Don’t forget the other very successful strategy to spread stupid genes : multiply like rabbits.
One of the (highly decried by leftists) theme of the Bell Curve is that low IQ people tend to have higher fertility rates : blacks women produce more twins, mature more precociously, ovulate more often... than whites who do more than Asians. Blacks prefer to breed more instead of whites who prefer to nurture more, this is an indeniable fact, even more now in the age the welfare society and food stamps.
The Bell curve even warned that a society in which intelligent women prefer to be successful businesswomen instead of mothers and where “welfare queens” have many offsprings can not end well. The expression “demography is destiny” seems totally prophetic to me.
Maybe I should have made a distinction between genetic bottlenecks imposed externally due to natural disaster, ice age or war, as opposed to genetic bottlenecks imposed by deliberately inbreeding when there is no external pressure making this behavior necessary.
Don’t forget that Muslims follow a religion that requires praying 5 times a day after washing their hands. This religion also has many rules for living, including that you use your left hand to wipe your butt, and your right hand to dip into the communal food tray. With these two very basic sanitation life rules, their population soon outstripped that of the people they conquered, and will continue to do so in underdeveloped areas of the world.