People are not machines with linear productivity gain the more they work. That is why your argument is flawed. You only go by numbers instead of counting in the human factor (if you genuinely mean it and aren’t trying to russle my jimmies). Majoring in economics doesn’t mean anything if you only learn half the stuff. I majored in political economy and was also in business and they are worlds apart. So I recommend you read up about the political economy (Volkswirtschaft).