Graboyes taught at five universities, including 48 semester-long graduate courses in health economics. He challenged his students—medical professionals such as doctors, nurses, therapists, and administrators—to resist groupthink.

Perhaps his most effective method was to teach them about the eugenics movement, and his classes were usually his students’ first substantive exposure to the topic.

Graboyes notes that eugenics was the dogma of the early 20th century—speaking out against it meant risking your job or reputation. He says the movement did so much damage because of “eugenicists’ lack of skepticism and their brutal intolerance of dissent.”

[Sound familiar? It should. Ted follows this with an interview of Graboyes on why we’re seeing a return of the eugenics impulse to “improve” humanity — and why it relies on the same cult behavior as it did a century ago. — Ed]