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Right, but humans are terrible at the happy path. I’d take 20% safer on the happy path over 40% less safe in unforeseen circumstances. The failure mode being “stopped car” is also not that bad.

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You’re presenting a false dichotomy. There’s the third part which is “foreseen but challenging circumstances.” Also, “stopped car” can be VERY bad in many circumstances. Stopped on lane 2 of a motorway, stopped in running water, stopped in snow.

Also I suspect many “unforeseen” circumstances happen regularly. The unforeseen part is “what” and “when.”

... stopped on a railroad track.

https://www.independent.co.uk/news/world/americas/waymo-trai...

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