No one here knows anything about the technologies they bash, that's why.
In a world where all content is housed at repositories controlled by the content providers, as soon as someone decides that such content needs "editing" for artistic, financial or political reasons.. then there's NO recourse, or even a source of proof that the previous version ever "existed" at all. Sounds like 1984 really just arrived. So who DID shoot first, Han or Greedo? I SWEAR I remembered it otherwise.. but nope, I guess not.
I just learned that around 800 pedestrians per year are hit in San Francisco alone. Forgetting jokes about bums and jaywalkers, I'm guessing a significant percentage of those people were doing exactly what they were supposed to and the car just didn't stop for the red light, or didn't yield, or they didn't see that car coming from behind in the six-way intersection. If there were no audio cues I am sure these unfortunate rates would just go up. If you're thinking in binary and believe we ONLY need one sense (sight) to protect us from accidents... give me some of what you're smoking, please...