The Perils of Mathematization
The President of the Minneapolis Federal Reserve had warned that unduly low interest rates would cause deflation. Of course, anyone with a handle on basic macroeconomics knows that the risk of leaving interest rates too low is inflation. (I do not believe that this risk is currently very serious.)
Nick Rowe suggested the following:
I notice he has an undergraduate in maths, then went straight into a PhD in economics. My conjecture: I bet he never took Intro Economics, or anything vaguely similar. I bet he waded straight into the mathematical deep end. And so he never really learned economics. . . . If you explain this in words, as you have to in Intro Economics, you have to get it right.