That's pretty egregious, yeah. To be as fair as possible, the author did say "describe", not "understand", but that's small consolation. Perhaps more materiall

That's pretty egregious, yeah. To be as fair as possible, the author did say "describe", not "understand", but that's small consolation. Perhaps more materially, HN is obviously(^) not the intended audience for this article! We get a hint of this early on, when the author talks about axioms that contradict LEM -- the phrase "of course" stands out pretty starkly. (^) Oh no, I did it too!