I agree with you overall, but would question two parts of your post. > we can assume that each intervention prevents at least a “ding”. I don't think we can b

I agree with you overall, but would question two parts of your post. > we can assume that each intervention prevents at least a “ding”. I don't think we can be sure that the vehicle wouldn't have corrected itself in time, nor how many would have been much worse than a "ding". This is where some closed course testing with simulated pedestrians and bicycles etc may give more evidence. In evaluating self driving software, knowing what the consequences of a failure are is important. As you point out, safety drivers prevent this assessment. > based on video evidence of FSD I think that there is selection bias in the readily available footage. Firstly, the short clips are likely to be where there is an incident. The longer ones are usually beta testers deliberately choosing tricky routes to test the FSD. I don't see anyone posting videos of a 3 hour freeway drive where nothing happens. But my point is just that this is complex, and we should be much more careful than we are being.