A proper name referencing Galen, a famous ancient Greek physician and medical writer whose theories dominated medicine for 1,500 years.
From Greek 'Galenos,' meaning 'calm' or 'peaceful.' Galen of Pergamon (129-200 AD) was one of the most influential physicians of the ancient world, and his name became synonymous with classical medicine.
Galen's theories ruled medicine so completely that doctors didn't seriously challenge him until the 1600s, which shows how one brilliant mind's ideas can actually hold back progress if they're accepted without question.
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