Explanation: Oscar Lange (1904–65), the Polish philosopher, who in 1950s suggested the same things for the socialist economy as Keynes had suggested for the capitalist economy.

• In 1985, China announced its ‘open door policy’, the first experiment in ‘market socialism’—Lange had the last laugh.
• Other state economies, though caught unprepared, followed the Chinese experiment towards market socialism.

Source: Ramesh Singh