I'm sorry your Tesla has hit things. Mine hasn't. ===== I took a shower since the first version of this comment, so the following edit is an actual shower tho

I'm sorry your Tesla has hit things. Mine hasn't. ===== I took a shower since the first version of this comment, so the following edit is an actual shower thought about your comment. If self-driving vehicles succeed, it will be because they're safer than human drivers. That's obvious. But we probably won't be able to cherry-pick an arbitrary driving metric and show that computers always beat humans. Computer drivers will be safer than humans, but they will make different kinds of mistakes. Instead of 40,000 humans dying in auto accidents each year in the US because of inattention, DUI, sleepiness, overreaction, or poor training, we'll have maybe 1,000 humans dying because of ridiculous computer behaviors. And that 1,000 probably won't be a subset of the 40,000; they'll be 1,000 completely different people. That will seem weird. The 40,000 deaths feel like a natural part of life, but the 1,000 will feel like a grave injustice. Yet my computer thinks 1 divided by 10 is 0.10000000000000001, and I still use it for arithmetic.