but what was unusual is that so many other folks like john kenneth galbraith, economist paul samuelson, others thought that the soviet union was doing fairly well economically. and friedman sort always maintained that they were kind of basket case, a basket case economy. why do you think friedman was so i guess right that ahead of his time about that while so many of these other well-known economists were i mean samuelson i mean in his textbooks which everybody had to read i mean the dominant economics it talked about soviet economic growth converging with that of the united states over time. what did friedman that so many of these brilliant economists missed. well i think some of it goes back his interest in empirical studies. so he had a couple of students who were working on the soviet and so he was paying little bit more attention to sort of what was what you could measure that was not in the official statistics or what was reported. so i think part of it is not just assuming that you have a model of how economies develop, but actually questioning what's there underneath. and then