Quantum Theory at the Crossroads: Reconsidering the 1927 Solvay ConferenceThe 1927 Solvay conference was perhaps the most important in the history of quantum theory. Contrary to popular belief, questions of interpretation were not settled at this conference. Instead, a range of sharply conflicting views were extensively discussed, including de Broglie's pilot wave theory (which de Broglie presented for a many body system), Born and Heisenberg's 'quantum mechanics' (which apparently lacked wave function collapse or