I can only assume you’re being downvoted because folks are thinking that you can’t go supersonic without making a boom. While this may be true, it doesn’t change the fact that you make a good point - regulation should be made as close to externalities as possible. If it makes the upstream thing impossible, then fine, but let’s actually regulate what we want to regulate.

I saw that, I find that hard to believe unless they are flying extremely high. I think height was also mentioned.

But doesn't flying that high damage the ozone or something ? I thought that was one of the many reasons the concord was stopped (Yes, I know the real reason was financial). If so, many planes flying that high could cause other issues.

But some people will see if this happens.

> But doesn't flying that high damage the ozone or something

Well, then add that to the list of things that are prohibited, I guess and let them see if they can make it work.

Regulate the things we actually don't want, rather than the adjacent things.

What an unusually sane point.