Starting with David Henderson: here he, with help from Robert Frost, considers walls .
What is most alarming about the president and his accomplices in the dissemination of factoids is not that they do not know this or that. And it is not that they do not know what they do not know. Rather, it is that they do not know what it is to know something.
And ending with David Henderson: here he considers James Kwak’s recent uninformed attack on the usefulness of basic economics .