Have We Been Living in an MMT World Since 2008?

I recently viewed Finding the Money, a video aimed at persuading a popular audience of the putative merits of Modern Monetary Theory (MMT).  The video debuted this past May on several streaming platforms and theaters throughout the U.S.  Whether it succeeded or not in its purpose, I will leave it for others to judge.

What I found most noteworthy in the 95-minute video was a brief clip of an interview with George Selgin, an economist of some stature in free-market monetary policy circles.  When q...