"Piketty is bringing the Occupy message into the mainstream of economics."
"It's impossible to have inequality in a neoclassical economic model."
"This is what makes him the darling of the economics profession." He combines classical discussions of inequality with neoclassical framework."
"My fear is that the particular theoretical construct he uses to do it in the end is one of the greatest enemies of anyone who is interested in egalitarianism."
"He has so-called fundamental laws. The first is a tautology. The second cannot exist in practice. And the third is trivial."
"The conclusion is so anticlimactic and the theory is so weak." -- other professor
"I have a great deal of admiration for Paul Krugman. He has made contributions, and he used his NYT column to single-handedly criticize Bush's economic policies and lies. Except I do not value tremendously his own theoretical perspective.
He uses a one-commodity model. Everything he says is couched in the IS-LM model."
"None of these models include money. Money is too complicated a concept. They use single-commodity models instead. If you introduce money into the models, they become indeterminate."
"I worry that Piketty is much shiftier than Paul Krugman. He does not seem as interested in changing the world in significant ways. "
"Piketty conflates capital and wealth. Why? Because you can't measure capital."
"Conflating capital and wealth means you aren't distinguishing between industrial machinery and your grandmother's silverware. When you then propose a wealth tax, what are you going to tax? Are you going to tax mansions? That would be good. Are you going to tax industrial machinery? That could be bad. If your grandmother doesn't have any income, are you going to force her to sell 20% of her silverware to pay the wealth tax?"