As a child, I once came upon a documentary on the development of the Bell X-1, the first supersonic plane. Honestly, I don’t remember much from it. I don’t even remember what the plane looked like. The underlying and pervasive theme centered around breaking the sound barrier, most of the observed behavior about flight are transformed as your plane approaches the sound barrier. They needed to build the plane to function differently than other planes of the era.
However, the speed of sound (767 mph) is a natural barrier. Sonic booms don’t arbitrarily occur; it’s not as if we sweet talk the atmosphere to behave that way for show. Engineers and pilots navigated and overcame the challenges to building and operating the Bell X-1. As an engineer, I acknowledge it as a great human achievement, but I also understand that it overcame a natural barrier, not an artificial one.