Followers of the Austrian economists (if you are at all sincere about understanding political economy you should at least get familiar with their arguments) frequently lament that the Keynesian social-democrat mainstream not only disagrees with them, but never even bothers to argue against them, treating them instead as if they were invisible or worse, attacking idiotic strawmen instead. But every once in a while I notice a truth, revealed long ago through reason by the Austrians, peeking through when a modern Keynesian happens to write about real world effects that seemed to him counter-intuitive.