Money is burdensome. As Karl Marx lectured, “wage is but a necessary consequence of labor’s estrangement”. Money is what we deserve for hours x hours of unsatisfying work. But extra money is different. Extra money is a bonus we are not entitled to receive. Extra money is a guilty pleasure we derive for getting more than our effort’s worth. That’s why we try lotteries. That’s why we fall for scams. That’s why we lunge for coins on the pavement.