Despite what people say, I think that any interviewing comes down to your gut feeling if you're any good at interviewing at all. There's no single set of questi

Despite what people say, I think that any interviewing comes down to your gut feeling if you're any good at interviewing at all. There's no single set of questions that you can use to filter in the best or filter out the worst, except maybe the fizzbuzz like things in case you have to filter out people who actually can't code. So this question presents a nice background for talking about something that allows you to ask endless questions about it and go deeper and deeper as long as you have time. I generally like this sort of approach as people will "fold" eventually if pressed hard enough, i.e. they have to admit that they don't know something or they'll try to act like they do. And the goal of an interview is not just reach to point where people "fold" but the path travelled before reaching that point.