In the 1940s Paul Sweezy (and many others) expected the end of World War II to be followed by rapid economic growth by whatever countries wound up in the socialist camp and renewed depression elsewhere--and that within a generation it would be very clear that living standards were higher, the social provision of necessities more complete, and technology and industry more advanced in socialist than in non-socialist economies. Nikita Khrushchev still believed this in the second half of the 1950s--that "we [the socialists] will be present at your [the capitalists] funeral" because one system (the socialist) was rational and capable of supporting human progress and the other (the non-socialist) wasn't.
Looking at western Europe and eastern Europe--or at South Korea and North Korea, or at Vietnam and Cambodia on the one hand and Singapore, Malaysia, Thailand, and the Philippines on the other--the confident forecasts of Sweezy and Khrushchev just didn't come true.
Kornai's trying to figure out why not. That seems to me to be a laudable project...
Brad DeLong