Depends the interpretation. Bell thought the most straight forward conclusion was that quantum systems are both quantum waves and particles, where the wave guid

Depends the interpretation. Bell thought the most straight forward conclusion was that quantum systems are both quantum waves and particles, where the wave guides the particle (Pilot Wave/Bohmian Mechanics). In MWI, particles are superpositions of every possible quantum value. We can understand that as branching worlds thanks to entanglement and decoherence. Saying we can't understand the mathematical formalism is a kind of Copenhagen interpretation.