I once sat at a bar next to a drunk guy who told me he was a Boeing engineer. He proceeded to describe to me how jet engines work, one limitation of common designs, and a way to work around it. I didn’t understand any of it. I got the impression he was very interested in his work and didn’t have people he could discuss this stuff with.

He then told me about a limitation with the SR-71 Blackbird (Apparently the panels of the body expand at high speed, so they have to be designed in a way where they have gaps and are leaky on the ground, until they reach sufficient speed.)

He said solving this problem would be a big deal. Then he wrote the word, “Aurora” on a napkin and immediately crumpled it.