Nearly 20 years ago I met a doctor who had built a diagnosis system for brain related conditions. When he showed it to me I was completely blown away. You would enter some symptoms and the system would display a list of possible diagnoses. If you then entered test results it narrowed down the diagnoses – in fact it was able to tell you which test would most help you at this differential step! The whole thing ran on a laptop. So what was the catch? Well it turned out that it had taken him year...

Nearly 20 years ago I met a doctor who had built a diagnosis system for brain related conditions. When he showed it to me I was completely blown away. You would enter some symptoms and the system would display a list of possible diagnoses. If you then entered test results it narrowed down the diagnoses – in fact it was able to tell you which test would most help you at this differential step! The whole thing ran on a laptop. So what was the catch? Well it turned out that it had taken him year...