First, you are not engaging with any of the points in my reply. (Do you disagree that the fraction of accidents that diagnostic systems can plausibly stop is <

First, you are not engaging with any of the points in my reply. (Do you disagree that the fraction of accidents that diagnostic systems can plausibly stop is <<4%? We can't tell.) Second, you keep suggesting that I made claims about this being "trivial" or "noteworthy". I did not. I made a claim about what would be a good system, not the notability of the absolute number of accidents stopped.