Productivity
Am I the only one who's noticed that the least productive jobs are often the best paid? How "productive" is a wealth fund manager? A film star? A footballer? A patent troll? When it comes to providing a basic standard of living for as many people as possible - which surely should be the main function of our economy* - their contribution is insignificant compared to that of the teacher, the nurse, the binman, the factory worker - all of which tend to fall in the lowest wage bracket. In fact, one could argue that rather than contributing the first category represents a net drain on the economy, while the working poor pull far more than their fair load.
*) I.e. make sure everyone has a roof over their head and food on the table before worrying about the rights of billionaires.
Biting the hand that feeds IT
