Interview feedback: “In five years time?”

It’s one of the classic HR/interview questions, isn’t it? Where you see yourself in some hypothetical future state, having mysteriously gained awesome prophetic powers that enable you to accurately foresee not just your own career trajectory, but the future health of the interviewing company, the economy in general, your personal life circumstances – and presumably that bus you step out of the way of just in time sometime in 2017.