| "For a thousand years, China has been ruled by a cognitive meritocracy selected through the highly competitive imperial exams. The brightest young men became the scholar-officials who ruled the masses, amassed wealth, attracted multiple wives, and had more children." Author manages to squeeze a topping of first semester Introduction to China with a thick crust of massive unsubstantiated overreach. "hunting for sets of sets of IQ-predicting alleles. I know because I recently contributed my DNA to the project, not fully understanding the implications." Nice autopraise, mildly disguised. "After a couple of generations, it would be game over for Western global competitiveness." Seriously? There was an otherwise intelligent guy working for us who started spouting this kind of drivel. We noticed it all started after he got assigned a female manager and then subsequently a non-white manager. Some people have mild racial hangups, which they then externalize in odd ways like China peril. |
Look at the intense selection on the Ashkenazi Jews over maybe 1500 years which has only produced an average IQ of 115 (there are alternate theories for their high IQs).
http://en.wikipedia.org/wiki/Ashkenazi_Jewish_intelligence
Selection of dog breeds for intelligence (German Shepherds, Jack Russell terriers, Poodles vs eg King Charles Cavaliers, Corgis) seems to have produced a large gap but it took a long time - dogs have been domesticated for ~5,000 years.
Generally selection works quickly at first, by filtering the population for the desired trait. Then it slows dramatically as the process is limited by new beneficial mutations which are rare.
It is noteworthy that genes for high IQ seem to come at a price. Read up about Einstein's son Eduard for example.
Final point: maybe parents will not want to select for IQ. Maybe they would prefer to select for beautiful daughters for example?