"French economist Thomas Piketty argued in his widely celebrated book “Capital in the 21st Century” that the rich only get richer over a long period of time, creating a permanent aristocracy of wealth. And while it’s true that the combined net worth of the “1 percent” has increased, the actual people in the 1 percent come and go. Less than 10 percent of the 400 wealthiest Americans who appeared on the Forbes list in 1982, when “Blade Runner” was released, were still there in 2012. As for the permanent aristocracy of wealth, of the 20 biggest fortunes on the 2013 Forbes list, 17 of them were self-made."