But my point is, Uber’s self-driving car has lots of goals -- drive safely, drive legally, drive quickly, drive comfortably, go in the right direction. A low-l

But my point is, Uber’s self-driving car has lots of goals -- drive safely, drive legally, drive quickly, drive comfortably, go in the right direction. A low-level safety system has a much simpler requirement: if it looks like the car is about to hit something, hit the brakes. And this second category of code is something that already exists, deployed in production today by multiple car manufacturers. That’s the bit Uber turned off. “It’s a hard problem!” doesn’t seem like a good explanation.