And Waymo and Cruise are only rolling out gradually into settings they have reason to think they can handle. And unlike for humans, every time they learn a new

And Waymo and Cruise are only rolling out gradually into settings they have reason to think they can handle. And unlike for humans, every time they learn a new lesson, the improvement spreads to their whole fleet. Humans lack that ability -- in a sense, we're the ones who are untrainable. (If you want to point at Uber before they stopped, I agree they were irresponsible.)