Spacetime Information Theory

This paper proposes a new paradigm named Spacetime Information Theory, abandoning the implicit premise shared by Shannon’s information theory and classical physics: all dynamic information of the universe is contained within instantaneous spatial slices. Taking the Spacetime Coupled Pigeonhole Conservation Principle as the mathematical foundation of the theory, this paper demonstrates that physical laws reside in the time dimension rather than static spatial snapshots, thereby establishing the Principle of Incomplete Instantaneous Slices. Based on the limited carrying capacity of space, a physical tolerance model is constructed, followed by the core sub-model—the Spacetime Internal Energy Model, which strictly distinguishes two types of internal energy with fundamentally different origins: apparent thermal internal energy formed by stacking spatial information, and intrinsic zero-point internal energy inherent to spacetime ontology. Two groups of daily intuitive phenomena are supplemented to verify the core logic that information stacking generates heat. The system further deduces the essence of motion, the causes of material states, and superconducting phase transitions, and constructs an epistemology of dual observational defects. At the end, a testable scientific prediction is presented: DNA contains a large amount of implicit evolutionary information stored in the time dimension, and static gene sequencing cannot exhaust all information of life. The full text features rigorous progressive logic, forming a complete self-consistent system covering ontology, mathematical basis, physical interpretation, phenomenon verification, epistemology and empirical predictions.