On Sunday The Times published an article by the political scientist Brendan Nyhan about a troubling aspect of the current American scene — the stark partisan divide over issues that should be simply factual, like whether the planet is warming or evolution happened. It’s common to attribute such divisions to ignorance, but as Mr. Nyhan points out, the divide is actually worse among those who are seemingly better informed about the issues.

The problem, in other words, isn’t ignorance; it’s wishful thinking. Confronted with a conflict between evidence and what they want to believe for political and/or religious reasons, many people reject the evidence. And knowing more about the issues widens the divide, because the well informed have a clearer view of which evidence they need to reject to sustain their belief system.

As you might guess, after reading Mr. Nyhan I found myself thinking about the similar state of affairs when it comes to economics, monetary economics in particular.

Some background: On the eve of the Great Recession, many conservative pundits and commentators — and quite a few economists — had a worldview that combined faith in free markets with disdain for government. Such people were briefly rocked back on their heels by the revelation that the “bubbleheads” who warned about housing were right, and the further revelation that unregulated financial markets are dangerously unstable. But they quickly rallied, declaring that the financial crisis was somehow the fault of liberals — and that the great danger now facing the economy came not from the crisis but from the efforts of policy makers to limit the damage.