> technology makes the economy so productive that prices fall to such a degree that people can live on an hour of labor a week. I would say that prediction can

> technology makes the economy so productive that prices fall to such a degree that people can live on an hour of labor a week. I would say that prediction can hold true only in a world with infinite resources, infinite space for expansion (to make population growth a negligible issue), and effectively free energy. Everywhere else population, food and energy production will compete with one another one way or the other - and there will always be a lower bound in energy needs for transporting goods from where they are economically produced, to the points of consumption or use. Now if we could cover most of Sahara with efficient solar panels and transport the energy over superconducting wires anywhere in the world...