Remember when IBM’s “Watson” computer competed on the TV game show “Jeopardy” and won? Most people probably thought “Wow, that’s cool,” or perhaps were briefly reminded of the legend of John Henry and the ongoing contest between man and machine. Beyond the media splash it caused, though, the event was viewed as a breakthrough on many fronts. Watson demonstrated that machines could understand and interact in a natural language, question-and-answer format and learn from their mistakes. This meant that machines could deal with the exploding growth of non-numeric information that is getting hard for humans to keep track of: to name two prominent and crucially important examples, keeping up with all of the knowledge coming out of human genome research, or keeping track of all the medical information in patient records.