We detached this subthread from https://news.ycombinator.com/item?id=12265627 and marked it off-topic.

We're not talking about what to do right now, we're talking about how to solve the problem for all time where the technology asymptotically approaches perfection but, obviously, never actually gets there (just like human drivers never get there.) Telling people to just not use Tesla's v0.8 autopilot might make sense; but what should be the policy in 2050 when cars are driving better than people, but still miss something (like human drivers sometimes do) such that it would be good to get a human's attention?

Alcohol? We seem pretty okay with allowing some degree of risk.

like cigarettes?