I don't have a source for this, but as an interviewer, simply thinking about what I can get from a riddle indicates it's probably true. I have a mental checkli

I don't have a source for this, but as an interviewer, simply thinking about what I can get from a riddle indicates it's probably true. I have a mental checklist of about fifteen items that I try to get answered when interviewing a candidate, and asking riddles would barely if at all help me answer any of them. That's not to say they're worthless, but when I have an hour or so to interview a candidate, they're not an effective use of my time (and I imagine that most candidates would think it's a lousy use of their time, too) - I ask questions that can answer four or five items on my list, not one if I'm lucky.