On Saturday, Senator John Barrasso of Wyoming delivered the weekly Republican address. He ignored Syria, presumably because his party is deeply conflicted on the issue. (For the record, so am I.) Instead, he demanded repeal of the Affordable Care Act. “The health care law,” he declared, “has proven to be unpopular, unworkable and unaffordable,” and he predicted “sticker shock” in the months ahead.

So, another week, another denunciation of Obamacare. Who cares? But Mr. Barrasso’s remarks were actually interesting, although not in the way he intended. You see, all the recent news on health costs has been good. So Mr. Barrasso is predicting sticker shock precisely when serious fears of such a shock are fading fast. Why would he do that?

Well, one likely answer is that he hasn’t heard any of the good news. Think about it: Who would tell him?

My guess, in other words, was that Mr. Barrasso was inadvertently illustrating the widening “wonk gap” — the G.O.P.’s near-complete lack of expertise on anything substantive. Health care is the most prominent example, but the dumbing down extends across the spectrum, from budget issues to national security to poll analysis. Remember, Mitt Romney and much of his party went into Election Day expecting victory.