Lobotomy is a great one too for which they received a Nobel Prize
You know, ramming a metal stick into peoples brains to "remove" and therewith "cure" psychological disorders.
"The procedure was modified and championed by Walter Freeman, who performed the first lobotomy at a mental hospital in the United States in 1936. Its use increased dramatically from the early 1940s and into the 1950s; by 1951, almost 20,000 lobotomies had been performed in the US and proportionally more in the United Kingdom."
https://en.wikipedia.org/wiki/Lobotomy
