It'll likely take a long while before Watson and other AI systems are regularly providing advice at hospitals, and it won't be all that useful in situations without readily comparable data. We've asked the school for more details of what happened. However, the diagnoses show just how useful the technology could be in the medical world. Human doctors wouldn't have to spend ages sifting through research to identify an obscure disease, or hope that another hospital can offer insights -- they'd just plug in the right data and start the healing process.