Just as a quick reminder:
Between 1947 and 1979, productivity in the U.S. rose by 119 per cent, while the income of the bottom fifth of the population rose by 122 per cent.
Between 1979 and 2009, productivity rose by 80 per cent, while the income of the bottom fifth fell by 4 per cent.
In roughly the same period, the income of the top 1 per cent rose by 270 per cent.
Duh, it was all trickle up economics after Reagan...