IBM's Watson lends hospital staff a helping hand

Watson, IBM's artificial intelligence computer system, is ridiculously prolific. In the last few years it's written a cookbook, crafted a movie trailer, joined the debate team, and helped in medical education, among many other projects. The latest point on the system's resumé is to help make hospital stays more comfortable for patients and relieve the strain on doctors and nurses through smart speakers that can answer basic questions and grant patients' control over things like room temperature, the lights or the TV.