An architect with no linguistics training cracked a 3,000-year-old script
Linear B, found on clay tablets on Crete, had defeated professional scholars for 50 years. Michael Ventris, a British architect working on it as a hobby, worked out in 1952 that it encoded an archaic form of Greek — centuries older than any previously known Greek writing.
— Wikipedia, Michael Ventris — Decipherment of Linear B, 1952