[tprice7]

I'm sure the theory falls short of describing reality in all sorts of ways but it does not imply there is no profit, that is a misunderstanding that astonishingly few people are pointing out given the amount of discussion it has generated. The revenue generated per worker is their average output, which is higher than the marginal output due to the law of diminishing returns (so yes, you could say that The Economist is being misleading here since "the value of what he produces" is ambiguous and arguably should refer to the average output rather than marginal output).