But for me, the machine’s lapses are fun, and even a bit comforting. It’s a reminder about the tremendous amount of work it has to do to come up with a correct response. It’s hard. And if Watson got them all right, people wouldn’t appreciate this. What’s more, Watson’s mistakes are a useful reminder to us that there are plenty of areas where the computer is clueless–and needs human help and supervision. There’s a place for us in a world full of Watson-like computers. They’re brilliant. And for me, story of how this one was built was fascinating. But in the end, Watson, with all its strengths, is still a tool.