Unified Cosmic Mechanics Evolution Theory (VII) Evolutionary Spacetime

The nature of spacetime is one of the core propositions in physics research. In the 17th century, Newton proposed the absolute spacetime view, regarding spacetime as a fixed background independent of matter and flowing uniformly. This view is consistent with macro-low-speed perception and laid the foundation of classical mechanics. At the beginning of the 20th century, Einstein broke this limitation through the theory of relativity, revealing that spacetime is a four-dimensional whole closely related to material motion: special relativity clarified the spacetime contraction and expansion at high speeds, while general relativity explained gravity as the spacetime curvature caused by mass, successfully resolving the physical statistical contradictions in high-speed and strong gravitational scenarios. However, time and space are universal emergent relationships in any state evolution system. They are not entities that can exist independently and affect state evolution, but are synchronously and concomitantly emergent from the state changes of evolutionary carriers based on their own representational quantities and free dimensions. Neither absolute nor relative can fully express the meaning of spacetime — spacetime is not a container, nor a curved film, but a statistical projection of the state evolution of momentum units. The essence of Einstein's mass-energy equation E = mc² is precisely the spacetime state shaping equation: - Representational quantity: Number of evolutionary carriers m- Dynamical energy-momentum: Evolutionary carrier × evolutionary speed, i. e. , mv- Spacetime state shaping quantity: Evolution frequency × evolution amplitude, i. e. , Eₛpacetime = mv² (upper limit is mc²) Here, both v and c represent statistical sampling quantities for the synchronous emergence of time and space — each spatial scale lₚ emerges in pairs with each time scale tₚ, and the coupling rate is c = lₚ / tₚ. Therefore, E = mc² is not a dynamical eigen-equation, but a spacetime state shaping equation describing the total evolutionary coupling amount of momentum units within a spacetime window. The intrinsic dynamical relationship is E = mc (energy = momentum = force). Note: This paper is based on the overall derivation within the framework of information dynamics evolution theory, proving that the only physically real evolutionary carrier of the universe is the momentum unit, and all have the evolutionary capacity of the speed of light c. Therefore, all particles are encapsulated by momentum units, which is the only dynamical origin. For details, see other related chapters.