Particles pretty much _need_ to be in a few places at once, even for such simple things as establishing chemical bonds: https://johncarlosbaez.wordpress.com/20

Particles pretty much _need_ to be in a few places at once, even for such simple things as establishing chemical bonds: https://johncarlosbaez.wordpress.com/2015/03/13/quantum-superposition/ https://johncarlosbaez.wordpress.com/2015/03/13/quantum-supe... And the difference between being in two (or many) places at once, vs just not knowing where it is, results in different energies.