Knock it off, Paul Krugman.

I get that you’re a smart fellow, Nobel laureate and all.

But your Nobel Prize is in economics, not medicine.

Why, then, are you trying to diagnose a supposedly “obvious” mental illness for the president of the United States?

http://www.businessinsider.com/paul-krugman-trump-mentally-ill-2017-1

Krugman leans left in his economic theory. He opposes Trump at every conceivable level. Heck, so do I. So do most of those Americans who voted in the 2016 election.

But for crying out loud, Professor Krugman. You need not fire off tweets alleging something about which you have no knowledge.

Sure, the president is acting kind of goofy. He campaigned as a serious goofball. I get all of that.

No one, though, except a medical doctor is qualified to toss out assertions like the one Krugman has tossed. Not even if he is a smarty-pants economist.