NPR – Baldur Hedinsson and Jacob Goldstein
“You should pay for output (in this case, grades), and let workers figure out the best inputs (in this case, studying and going to class). Of course, that idea falls apart if the workers don’t really know the relationship between inputs and outputs — in this case, if they don’t really know on their own how to get good grades. . . . This problem is solved by paying kids to do their work, rather than by paying for results.”(more)