[hoppyhoppy2]

e.g. the eugenics movement, which led to forced sterilizations of people who many scientists of the time considered "unfit to reproduce."

https://www.history.com/topics/germany/eugenics#section_3

[refurb]

Eugenics was never "discovered". It was a theory latched onto by politicians to deadly ends.

[llanowarelves]

Metrics like IQ also help establish merit instead of nepotism, and identify what level a person is capable of learning at.

A group metric for your country becoming more successful and capable of maintaining what we call "democracy" -- 95 IQ and below can't really.