“The wave function then takes on the role of a pilot wave, guiding the particles as they move around. It’s like particles are little floating barrels, and the wave function describes waves and currents in the water that push the barrels around. The wave function obeys the ordinary Schrödinger equation, while a new “guidance equation” governs how it influences the particles. The particles are guided to where the wave function is large, and away from where it is nearly zero.”