Some engineers do balance inverted pendulums in their careers! https://space.stackexchange.com/questions/15486/how-does-the-spacex-falcon-9-first-stage-straight

Some engineers do balance inverted pendulums in their careers! https://space.stackexchange.com/questions/15486/how-does-the-spacex-falcon-9-first-stage-straighten-for-landing https://space.stackexchange.com/questions/15486/how-does-the...