Walden Two

What do you think about the feasability of the society as described in Walden Two? Although I cannot find any definite flaws, I do believe that the economic system wouldn’t work in real life, as the author seems to underestimate the the amount of work necessary to maintain the society (with the 4-hour day being the average) and the degree of training necessary to perform many tasks proficiently (he allows people to go back and forth between any number of jobs). Your take?