在Paul Samuelson的Economics(1985 edition)中,其写道:Every economy has its contradictions.… What counts is results, and there can be no doubt that the Soviet planning system has been a powerful engine for economic growth.
而且,就在苏联崩溃前夕,Paul Samuelson的Economics(1989 edition)这样写:Contrary to what many skeptics had earlier believed, the Soviet economy is proof that … a socialist command economy can function and even thrive.