The Codebreaker Who Couldn't Explain How She Knew

During World War II, a young clerk named Mavis Lever arrived at Bletchley Park with no formal training in cryptography. The seasoned mathematicians around her worked with elaborate formulas and systematic methods. Mavis had none of that. Yet in 1941, at just nineteen years old, she cracked the Italian naval Enigma code — a breakthrough that led directly to the British victory at the Battle of Cape Matapan.…