Structure behind Mechanics

This paper proposes a basic theory on physical reality, and a new foundation for quantum mechanics and classical mechanics. It does not only solve the problem of the arbitrariness on the operator ordering for the quantization procedure, but also clarifies how the classical-limit occurs. It further compares the new theory with the known quantization methods, and proposes a self-consistent interpretation for quantum mechanics. It also provides the internal structure inducing half-integer spin of a particle, the sense of the regularization in the quantum field theory, the quantization of a phenomenological system, the causality in quantum mechanics and the origin of the thermodynamic irreversibility under the new insight.