This book aims to shed new light on the puzzle of the late Soviet conversion to the “market” and capitalism by revisiting the history of Soviet reform economics. Using a variety of sources, including interviews with economists, archival files, and published materials, it examines the social contexts in which economists employed in economic administration and research institutions could have played a crucial public and political role, the forms of their participation, and the social and political logic behind the selection of economic experts and their rise to power during perestroika and the “transition” period. It also compares the professional trajectories of these reformist economists and assesses the scope of this group’s influence in the post-Soviet period in order to conclude on the new state of economic expertise in Russia.