"When computers do most jobs, human labor is relatively unimportant, and whether human wages rise or fall depends on whether owners of capital place a strong special value on services that only humans can provide. If they do, human wages can rise with the economy again, but if not, then human wages fall faster than computer prices now do. During this phase, economic growth is much faster."
Robin Hanson's "Economic Growth Given Machine Intelligence" about 1994, if memory serves.
