Damon Wai Kwan So Non-deterministic Quantum Mechanics (485K, pdf) ABSTRACT. The paper presents an interpretation of quantum mechanics in which a particle s motion is inherently non-deterministic while it has definite unambiguous momentum and position whose existence is independent of measurement. It is therefore distinct from the Copenhagen Interpretation while it is also distinct from the pilot wave theory in that this interpretation is inherently non-deterministic. This paper paves the way for rigorous investigation into the spins of particles in the succeeding paper.