Photo by Alexander Nemenov/AFP via Getty Images An official working at Gosplan, the central planning agency created in 1921, explains how it collects and distils data, then distributes the information across the Soviet economy, where it “falls like rain” on workers. A factory manager and a taxi driver describe the subterfuges to which they resort when pretending to be following the plan. In an office in Leningrad, as part of a technocratic project called “Intensification 90”, secretaries feed data into computers via large floppy discs to make central planning work more efficiently. Meanwhile, shoppers rake through ill-assorted piles of goods...