Why are we still trying to solve classical equations in physics (like the Navier-Stokes), given that we are so certain the universe is quantum, not classical? – Viktor T. Toth October 26, 2020sciencehistoryscoper https://www.quora.com/Why-are-we-still-trying-to-solve-classical-equations-in-physics-like-the-Navier-Stokes-given-that-we-are-so-certain-the-universe-is-quantum-not-classical/answer/Viktor-T-Toth-1