Re: In theory, theoretical questions are great. In practice, they are fidgety little things that must be asked precisely correctly to have the same "correct" answer that the interviewer has memorized and are frequently botched, almost invariably involve a "gotcha" answer in such a way that honestly I do not want to see a coder actually code, and have a laser-like focus on an aspect of the job that in most cases will involve less than 1% of your job, no exaggeration.

Indeed, programmers as a whole really have no clue about the biases they inject into interviewing somebody else. The knee jerk dogmatism that underlies the various "religious wars" in programming are merely a large, easy to see manifestation of the same fundamental myopic expectation mechanism. :-(