Here’s a “gap” that ought to concern leftists

It’s the discourse gap — the difference between the propensity of most (although certainly not all) conservatives and libertarians to make serious arguments about policy questions and the propensity of many statists (again, not all) to disregard serious arguments in favor of snide and sarcastic rejoinders. Paul Krugman is the best-known of that sort and in this Cato@Liberty post, Tom Firey comments on his argumentative style.