Dr. Walter Edward Williams,the John M. Olin Distinguished Professor of Economics at George Mason University, is not your run-of-the-mill commentator. If you wish to dismiss his premise, why not refute it with facts instead of ad hominem attacks?
Think I just did binky. Perhaps you're mathematically challenged? Nothing a good undergraduate Controls course couldn't solve, but since you probably don't have the prerequisite's anyway, what's the point?
Lemme know when you can dispute Dr. Keen's work, which is far, far ahead of the lightly algebraic and primarily anecdotal ( I hesitate to call it "empirical") claptrap that passes for graduate education in "economics" in the U.S.