Ok, that doesn’t address the problem at all.
This article is a complete load of horse$hit. First of all, there is no "problem". If you use your own graph, the bottom quintiles stayed the same, through Johnson, Nixon, Ford, Carter, Reagan, Bush, Clinton, Bush and now Obama. All of whom had differing ideas on the economy.
Notice that rich people keep doing things that make them, wait for it...rich.
Also people don't stay in the bottom quintile their ENTIRE lives unless they are losers, mentally handicapped, lazy, or liberal welfare parasites.
And the biggest reason why this article is total garbage?
For the same reason that statistically HALF of the population is below the mean. Can you imagine that?
How can we live in a country where half of the population has an IQ that is below the mean? And 20% of the population lives in the bottom quintile. 80% are in higher quintiles. Just imagine!