A film about the academic revolt that reshaped how money gets invested, directed by Errol Morris for Dimensional Fund Advisors. Economists including Eugene Fama, Kenneth French, and Myron Scholes sit for interviews explaining the efficient market hypothesis: the idea that stock prices already reflect all available information, which means most stock-picking and market-timing amount to expensive guesswork. The film traces how this research, developed in university offices rather than trading floors, led to the rise of index funds and a quieter, less glamorous style of investing built on broad diversification instead of hot tips. Archival clips of frantic trading floors and confident TV stock pickers sit alongside calm academic explanation, making the contrast between Wall Street's noise and the data plain. Morris keeps his signature interview style, letting each economist explain the math and the history in plain language rather than jargon. The result is a case for boring, evidence-based investing dressed up with the visual craft of a real filmmaker.