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 his own future as Soviet leader? How does perestroika relate to a more general environment of openness, of glasnost? What happened at the June 1988...