A Fermi estimate is a quick-and-dirty solution to an arbitrary scientific or engineering analysis problem. Fermi estimation uses widely known numbers,...
https://www.ribbonfarm.com/2022/03/30/fermi-estimates-and-dyson-designs/
* Trinity test in 1945,
* Project Orion
* The Starship and the Canoe
* delta-vee
* Dyson sphere
* Dyson tree
* Fermi Gym
* The Art of Insight in Science and Engineering