Mikhail Gorbachev's perestroika is a historic effort at restructuring the troubled Soviet economy. Wide-ranging in scope, harnessed with cultural and political reforms, it raises intriguing and important questions: Are Gorbachev's ideas different from the Kosygin-Brezhnev reform of 1965 that came to naught? What kinds of problems do the Russians have in understanding the market system? Who opposes perestroika? Do Gorbachev's proposals threaten...