Earlier quoted context omitted.
the 80/20 principle says it's going to be a long, long time before level 5 autonomy is reached. That's 100% in all conditions. In fact, I would say it's more theory than attainable. There's a reason they're testing in Phoenix. It has almost no Inclement weather. Throw a little snow, mud, or sleet in there and it gets hairy fast. Level 2 is basically the 20% of effort in 80/20. It's exponential effort from then on out…
We shouldn't set a dramatically higher safety standard for autonomous drivers than human drivers. When autonomous drivers have the same or fewer injuries per billion miles driven as human drivers, then for all practical purposes it doesn't matter if it's level 4 or level 5.
If so why go through all this trouble to creat autonomous vehicles? I, for one, am glad this was not the prevailing attitude when commercial airliner regulatory bodies were set up.