Spacetime Dualism: A Complementary Descriptive Framework of Discrete Physical Spacetime and Mathematical Scaling Spacetime

This preprint proposes a novel "Spacetime Dualism" framework, which strictly distinguishes between discrete physical spacetime (ontological reality) and continuous mathematical scaling spacetime (descriptive tool). It resolves the millennial debate over spacetime continuity and discreteness by eliminating the category mistake of equating mathematical tools with ontological reality, and provides a philosophical foundation for the unification of general relativity and quantum mechanics, as well as the conceptual clarification of quantum gravity research.