[JamesBarney]

A standardized white-boarding interview is probably not completely orthogonal. But too many white board interviews don't have a standardized set of questions, with a standardized set of criteria over which to measure them.

And the ad-hoc tests have very little validity, and rely more on what questions the interview asks, and how confident and charming the interviewee is. Not to mention lots of credentialism. "Candidate Joe didn't answer the question but he's a Googler so that I probably just because I did a bad job explaining that." "Jessica didn't answer the question because she didn't know anything about software".