Ernest Hemingway

Developed the spare "iceberg theory" prose style — omitting rather than explaining emotional context — as a deliberate departure from 1920s literary convention, with acknowledged wide influence on later American fiction.

Volunteered as an ambulance driver on the Italian front at 18 and was severely wounded, then insisted on covering the Spanish Civil War and the D-Day landings from the front lines as a journalist two decades later.

Told an interviewer late in life that he rewrote the ending of A Farewell to Arms 39 times before he was satisfied — a specific, quantified instance of revision rather than a general claim of care.

This is consistent with the profile's documented perfectionism and competitiveness: exacting revision paired with a pattern of measuring his own standing directly against specific named rivals. Perfectionism

Documented across his own letters and later biography as ending several close friendships permanently over perceived rivalry, most publicly with F. Scott Fitzgerald, whom he criticized by name in his posthumously published memoir A Moveable Feast.

Survived two plane crashes on the same 1954 African trip, sustaining injuries from which he never fully recovered, a physical decline that coincided with the last, sparser phase of his writing career before his 1961 death.

This is scored at low ambiguity_tolerance in the profile — the documented behavioral pattern of his final years, not a claimed diagnosis, is the basis for that score. Ambiguity Tolerance