There are good tidbits in that post, but the way you measure "smart" is awful and almost entirely subjective. The conversation "just flows"? Really? Gee, I wonder if that's likely to make you hire people who have the same background as you.

I agree that the "gets things done" part is important! But I think you should measure if they can, in a controlled environment, instead of just going off the resume and seeing if it has worked out in the past. Lots of total dipshits manage to ride on the coattails of successful teams.