Study on Structural Expansion of the Space-Adaptive Human Evolution System — A Multi-Layer Evolution Model Based on Replacement, Inversion, Parallelization, Staging, and Analogy —

This paper presents an expanded framework of the Space-Adaptive Human Evolution System, proposing a multi-layer evolution model based on replacement, inversion, parallelization, staging, and analogy. It redefines human existence, evolution, and civilization by shifting from one-way adaptation to mutual co-evolution with the space environment. The model introduces concepts such as information-based existence, environmental optimization, and multiple parallel evolutionary paths, aiming to overcome physical limitations and enable sustainable, scalable adaptation across diverse cosmic conditions.