The Rise and Fall of Eugenics

19th and early 20th century that very early genetics and evolutionary theory but also completely racist theories of civilizational development. All of these things converged to create this pseudoscience which said well the really important thing about having a successful culture is that you have to maintain the high quality of your racial stock. You basically want people who have any form of disability who aren't good at really hard work or who aren't very clever to reproduce as little as possible.