alt Hacker NewsAha ok! Ambition reignited, it's not that it's trivial but it's very possible to simulate these things and there are plenty of valid shortcuts. The "BMW" astrodynamics books I learned a large chunk of it from was published in 1971. "Sphere of influence" is a lot more "things you have to do with pen and paper" than things you're forced to do with modern computers.
There’s a KSP mod called Principia which does some kind of n-body simulation in which Lagrange points do exist iirc.