I find that argument being thrown around once in a while, but let me ask you this. Why are we spending billions of dollars in research that we can vaguely hope to reach human perception levels in one distant day. This whole thing is just not worth it. That's why I said especially for dense urban traffic driving, we need extra sensing, and need from the environment so it can help the car. Imagine if the car knew there is nothing coming from a junction we don't need to stop all the way etc.