Since the late 1920s, the theory formulated by Niels Bohr and his colleagues at Copenhagen has been the dominant interpretation of quantum mechanics. Yet an alternative interpretation, rooted in the work of Luis de Broglie and reformulated and extended by David Bohm and his colleagues in the 1950s, explains the experimental data equally well. Through a detailed historical and sociological study of debates within and between opposing camps, and the reception given each theory, Cushing showed that despite the pre-eminence of the Copenhagen view, the Bohms interpretation cannot be ignored. Copenhagen interpretation became widely accepted not because it is a better explanation ("how") of atomic phenomena than Bohms but because it happened to appear first. In this monograph the author shows that Bohm's point of view is more productive. The properties of solitary objects, which he discusses contradict the Copenhagen's Illusions, but the results are or proved or provable experimentally.