I don't quiet get the productivity argument. Let say a society of 1000 workers produce $10,000, $10 each. If later one invents a tech that produces $9,001 and the remaining 999 people have to work shit jobs each making only $1. The overall productivity remains constant $10,000 / 1000 hours of work. This is the exact argument against tech displacing labour. Does anyone have data breaking down productivity per different dimensions?,(reply>), Naiem Y the whole productivity concept is flawed nowadays. Technology is making obsolete a lot of economics assumptions and measures.