"One of the stories is about how during his studies in the 80s he built a decision tree to help with kidney transplants."

And here we are almost thirty years later, and doctors in the US are still getting paid $250k or more to do stuff software could do, were it allowed, better, faster, and much cheaper.

My prediction is medicine will be one of the last fields to benefit from automation, simply because its greedy practitioners have a monopoly and won't give it up without a terrible fight. Sure, you'll increasingly see them rely on expert systems, but you won't be allowed to cutout the middlemen and go straight to Dr. Watson itself. They'll still be extracting their pound of flesh from us for many decades to come.