Enrico Fermi

Led the team that achieved the first controlled, self-sustaining nuclear chain reaction in history at Chicago Pile-1 on December 2, 1942, and was later appointed associate director of the Los Alamos laboratory, heading its own dedicated physics division.

At the Trinity nuclear test in July 1945, produced a real-time estimate of the bomb's explosive yield with no instrumentation beyond strips of paper dropped into the blast wave -- calculating roughly 10 kilotons, within a factor of 2 of the true yield.

With his wife threatened by Italy's newly enacted anti-Semitic Racial Laws in 1938, deliberately used his own Nobel Prize ceremony in Stockholm as cover to permanently emigrate his family rather than returning to Italy as expected.

Making this real, high-stakes life decision under genuine political danger is part of the basis for the profile's risk_tolerance score. Risk Tolerance

At age 10, together with a friend, found and self-taught himself mechanics and astronomy from a secondhand 1840 physics textbook, continuing to acquire and study physics and mathematics texts on his own initiative through his teens.

This sustained, self-directed intellectual pursuit beginning years before any career opportunity existed is part of the basis for the profile's curiosity score. Curiosity