[tptacek]

Careful. First and most obviously, the "pool of questions" concept is structured only if you have a Google-scale volume of candidates and reliably assigning specific subsets of those questions to candidates.

But even then, for such a process to be rigorously structured, the questions themselves need to be determined a priori and without reference to the candidates background or preferences. Otherwise:

* You're subject to the interviewers and judges (probably subconscious) biases about the merits of different questions.

* You're more exposed to the candidates own innate ability to interview well by navigating themselves to more easily-answered questions.