The WordPress JSON REST API Explained

Have you ever heard of that “JSON REST API” thing folks in the WordPress community seem to be talking about, looked around endlessly for a decent explanation, and finally gave up, muttering “WTF?!?” at the computer screen? Fear no more. Brian Krogsgard has you covered with the only explanation that, you know, actually makes some kind of sense in that sort of human logic that we tend to like when someone explains something to us.