In the last forty years, the per capita income of Americans (adjusted for inflation) has more than doubled. The percentage of homes with dishwashers has increased from 9 percent to 50 percent. The percentage of homes with clothes dryers has increased from 20 percent to 70 percent. The percentage of homes with air-conditioning has increased from 15 percent to 73 percent. Does this mean we have more happy people? Not at all. Even more striking, in Japan, per capita wealth has increased by a factor of five in the last forty years, again with no measurable increase in the level of individual
...more
