Just as an idle thought. With a lot of the problems in the world right now stemming from humans reliance on money for just about everything, do you think that we will ever move beyond this kind of system? I don't know what it would look like but its safe to assume it would be very government heavy. There would be no classes of people but there would also be no mansions or super expensive cars. Everyone would probably live in complexes where everything was the same. It would probably become super corrupt like a lot of communist countries became.