[jhamburger]

My point is that the "Toronto" error is constantly cited as proof that Watson is fundamentally flawed, when it's actually a fairly reasonable bug if you understand the process it goes through to reach the answer- It's just seen as a stupid answer because it misses a key filter that humans would pick up.

In the medical case, it's actually better for the answer to be obviously, embarrassingly wrong than slightly wrong. Like the other commenter said, people aren't going to be getting amputations for headaches just because Watson says so. There's much more danger in something like prescribing medications with a fatal interaction, something that a hypothetical "Dr. Watson" would pick up.