For a while, I stopped asking questions that I knew the answer to, and instead I asked the candidate questions that I was about to work on. So I didn't know the

For a while, I stopped asking questions that I knew the answer to, and instead I asked the candidate questions that I was about to work on. So I didn't know the answer yet. It was the closest I could get to a normal co-worker situation, where we both discuss an ongoing challenge. The only reason this approach is not scalable is that you need a constant flow of new problems, otherwise you start rehashing the same old questions, and by then you [think] you know all the good answers.