Per-distance statistics may stretch the risk perception as people use planes for different trips than cars. But per journey statistics seems a much bigger error

Per-distance statistics may stretch the risk perception as people use planes for different trips than cars. But per journey statistics seems a much bigger error in the other direction. Fatalities with airliners are pretty close to 0 per year whereas 30k+ people a year die in car accidents. Most people know of someone that died that way whereas any airplane accident is national news. 5x really understates that difference. I don't think per-journey numbers are reasonable as a comparison. The study showing 5x is quite neat, thanks. I expect this to be a floor for the difference though. Once some of the deaths with self-driving cars are shown to be things that human drivers would easily avoid the requirements will be higher, even if in total 5x better has been achieved. For widespread acceptance I'd bet on 10x as a minimum and 100x at the extreme, depending on what types of accidents are in there that shape the perception.