There was a science fiction short story where a group of scientists was invited by military personnel to watch a short secret footage of someone flying a jetpack. The scientists were told that the inventor only had one prototype and he crashed it killing himself and destroying the unique device. Next several months the scientists spent brainstorming and trying to figure out how he did it.
Spoiler!
The footage turned out to be fabricated by military. The scientists still built a prototype of the jetpack. Not so fast, light and agile but they made something that was previously considered impossible.
Spoiler!
The footage turned out to be fabricated by military. The scientists still built a prototype of the jetpack. Not so fast, light and agile but they made something that was previously considered impossible.