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Comment by pesenti | Hacker News Reader

The techniques of today are actually much more elaborate than decision trees. The key is gathering evidence automatically (i.e., learning) from medical literature - that requires parsing the text through ML techniques that have been invented just recently.

See https://www.youtube.com/watch?v=8lGJ0h_jAp8 for what the Watson medical diagnosis product looks like - it's not just about diagnosis, it's about evidences.

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That's definetly progress, but still , the point made by spitfire is true: The real challenge is adoption, not tech.

We even see it with the low acceptance of Watson in medicine and IBM's move into africa.

I wonder thought: why hasn't IBM offered a "second opinion" service directly to consumers ? It could might have sped adoption.

I agree that adoption is a challenge but the tech is also really challenging. Getting a system to a level of accuracy that gives doctors enough confidence to use it is no small task.

A "second opinion" service would have a lot of potential legal pitfalls.

Not necessarily directed at you, but one big frustration of mine while leading a project team was when someone would list off 'potential issues'. If the concept is compelling and the quick estimates look like positive ROI, go get the lawyers/marketers/buyers/executive team to do their job and push forward or come back with logical and specific reasons!

Sorry for the late response - i'm across the Atlantic.

I wonder, with the API , would it be possible for a startup to build such "second opinion service" , with reasonable costs ? will you block it?

What happens in the situation when something Watson has "studied" gets proved wrong or inconclusive say 1 year later. Does Watson have a method to discount that and all subsequent chains based on that research?

My understanding is that if you feed the results of the research into the system then it would be there when the algorithms are run in future and from that point on, the results would be taking the research into account and it's answer would change.

Yes, the system works in a way similar to the Jeopardy Watson. It collects evidences, and weighs them based on their date and possibly source quality. So new results will displace older results at some point.

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