In a new book called The Volt­age Effect, the econ­o­mist John List — who has already rev­o­lu­tion­ized how his pro­fes­sion does research — is try­ing to start a scal­ing rev­o­lu­tion. In this install­ment of the Freako­nom­ics Radio Book Club, List teach­es us how to avoid false pos­i­tives, how to know whether a giv­en suc­cess is due to the chef or the ingre­di­ents, and how to prac­tice ​“opti­mal quitting.”