You obviously want both to be productive, work hard (effort) and be clever (efficiency). A simple model would be: productivity = effort * efficiency On th

You obviously want both to be productive, work hard (effort) and be clever (efficiency). A simple model would be: productivity = effort * efficiency On the other hand though, there's probably some unclear connection between laziness and cleverness. My hypotheses: 1) Some people hate mundane work and crave intellectual stimulation. This has both positive and negative effects on productivity. 2) Clever people can afford to be lazy in school and they simply stay lazy.