There's another possibility that this thread seems not to have considered so far. What if it's the would-be interviewer posting? I find it easy to imagine a headhunting firm being asked to find Perl coders, agreeing without the least knowledge of Perl, gargling for questions and then trying to get answers from the enlightened before throwing them at interviewees. I find it much harder to imagine an interviewee being given time to come back with an answer, although I can imagine someone reacting to being stumped by an interview question by posting here.
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