The article could as well be called "three wrong ways to hire".

I don't understand why academia has long known the right way to hire, but the software industry keeps missing it. The right way is to let the candidates give a 30-60 minute talk about their previous projects, and then fry them with questions that came up in the talk.

Imagine a famous university wants to hire a top-quality math professor. How about asking him tricky high-school math questions for an hour, to see if he makes a mistake? Or how about cutting it down to 5 minutes, since that's enough to assess the "chemistry"? Or, what about choosing only from a pool of contractors that worked with the university before, rather than letting the best ones to apply? Sound stupid? Well, yes, it is stupid.