ECONOMICS PROFESSORS: Ninety percent income tax rate would help the rich.

[A] rate “between 85 and 90 percent” makes everybody better off, including people in the 1 percent. “High marginal tax rates provide social insurance against not [Huh? -ed.] making it into the 1 percent.” ... [T]hey would primarily fall upon “celebrities, sports stars, and entrepreneurs — people with innate talents that are hugely rewarding, but only for a short period of time.”

Uh, right. So what happens to those 'hugely rewarding for a short period of time' earners for the rest of their lives?

If marginal rates are ratcheted sky-high for top earners and low for everyone else, then there is a better than average chance that a typical American will pay very low tax rates.

Yes, there's a better-than-average chance that a typical American will remain poor.