Beyond that, we know who he turns to for economic advice; heading the list are Glenn Hubbard of Columbia University and N. Gregory Mankiw of Harvard. While both men are loyal Republican spear-carriers — each served for a time as chairman of George W. Bush’s Council of Economic Advisers — both also have long track records as professional economists. And what these track records suggest is that neither of them believes any of the propositions that have become litmus tests for would-be G.O.P. presidential candidates.

Consider Mr. Mankiw, in particular. Modern Republicans detest Keynes; Mr. Mankiw is the editor of a collection of papers titled “New Keynesian Economics.” In an early edition of his best-selling textbook, he dismissed supply-side economics — the doctrine embraced by the sainted Ronald Reagan — as the creation of “charlatans and cranks.” And, in 2009, he called for higher inflation as a solution to the economic crisis, a position anathema to Republicans like Representative Paul Ryan, the chairman of the House Budget Committee, who warn ominously about the evil of “debasing” our currency.

Given his advisers, then, it seems safe to assume that what Mr. Romney blurted out Tuesday reflected his real economic beliefs — as opposed to the nonsense he pretends to believe, because it’s what the Republican base wants to hear.