Ok, I was too strongly worded, and you can read it as a reduction to basic ranging. That's fine. I can rephrase: Reliable ranging should override other sensor

Ok, I was too strongly worded, and you can read it as a reduction to basic ranging. That's fine. I can rephrase: Reliable ranging should override other sensor mechanisms for detecting driveable space and presence of hazards. Tracking with dense ranging (e.g., LIDAR) is not as challenging as the alternative: ensuring that non-ranging system will reliably segment all possible hazards.