This is the fourth standalone paper within the theoretical framework of Parallel Intersection Studies (PIS). Paper 3, Physical Candidate for Cross-Node Penetration Medium: Temporal Properties of Unitary Evolution and Limits from Decoherence, discussed the theoretical value and physical limitations of unitary evolution as a candidate for cross-node penetration. This paper approaches from the opposite direction: it argues that life cannot penetrate unitarily, because life is essentially a structured system bound to temporal order. Three core corollaries are proposed. First, virtual spatial structures and real spatial structures are not essentially different—they differ only in scale, information density, and structural completeness, which transforms the question "is the world virtual?" from an ontological problem into a scale problem. Second, the gain of intersection depends on dissimilarity: two dissimilar systems that intersect complement each other and yield 1+1>2; two similar systems yield little new information; physical collisions between different levels (rather than informational intersection) lead to entropic disorder, 1+1<2. Third, life is a system with spatial structure and temporal order and cannot exist independently of temporal order; for life, intersection always means a positive informational increase—local ordering and global entropy increase occurring simultaneously. This paper, together with Paper 1, Parallel Intersection Studies: A Unified Theoretical Framework Based on Scale Relativity and Parallel Relativity, and Paper 3, forms the trilogy "theory—penetration candidate—non-penetrability of life", mutually corroborating. 【中文摘要】本文是平行相交学理论框架的第四篇独立论文。论文三《跨节点穿透介质的物理候选:幺正演化的时序性质与退相干局限》讨论了幺正演化作为 "跨节点穿透候选" 的理论价值与物理局限。本文从相反方向切入:论证生命不能幺正穿透,因为生命本质上是时序绑定的结构化系统。本文提出三个核心推论:第一,虚拟空间结构与真实空间结构,在本质上没有区别,区别仅在于尺度、信息密度与结构完善度。这一推论将 "世界是否虚拟" 从本体论问题,转化为尺度问题。第二,相交的增益取决于相异度。两个相异系统相交,信息互补,增益大,1+1>2;两个同类系统相交,新增信息少,增益小;不同层级系统发生物理碰撞(非信息相交),则进入混乱熵增,1+1<2。第三,生命是有空间结构和时序的系统,不能脱离时序独立存在。相交对生命而言,永远意味着信息正向增加,即局部有序化与全局熵增同时发生。本文与论文一《平行相交学:一个基于尺度相对性与平行相对性的统一理论框架》、论文二《双缝干涉观测系统复杂度 - 时间延迟测量实验设计方案》、论文三《跨节点穿透介质的物理候选:幺正演化的时序性质与退相干局限》共同构成平行相交学的完整推演序列;其中本文与论文一、论文三构成 "理论 — 穿透候选 — 生命不可穿透" 三篇序列,互相验证。
Parallel Intersection Studies: A Unified Theoretical Framework Based on Scale Relativity and Parallel Relativity Parallel Intersection Studies (PIS) is a pan-disciplinary unified theoretical framework of scale and observation systems. Its core research scope is: for different research fields, objects, goals, observational perspectives, and reference systems, to match, select, and define appropriate observational scales and observation system rules. This paper proposes a cross-disciplinary theoretical framework—Parallel Intersection Studies. The framework is based on two core axioms: Scale Relativity and Parallel Relativity. On this basis, the paper introduces Time Non-Entity, Scale Difference Composition, and other derived axioms, and provides a quantifiable energy description formula. The core claim is that classical physics, relativity, and quantum mechanics are not three mutually contradictory systems, but local manifestations of the same underlying dynamics at different scale levels. The paper provides two falsifiable predictions. The first prediction has two layers: (1) the existence of an observation system causes the observation result to change requiring time; (2) changes in the complexity of the observation system will cause changes in the time delay Δt of interference fringe switching in the double-slit experiment. The first layer is the core of the theory; the second layer is a specific parameter conjecture. Even if the second layer is falsified, the first layer can still stand independently. The second prediction can be directly tested using existing atomic and laser spectroscopy databases. Using 17 sets of measured data from hydrogen Balmer and Lyman series, the paper obtains the hydrogen scale coefficient Λ_H ≈ 4.1×10⁻⁵. The experimental design corresponding to the falsifiable predictions of this theoretical framework is described in the companion preprint "Experimental Design for Measuring the Time Delay of Interference Fringe Switching Induced by Observation System Complexity". V1.2: Added the disciplinary definition of Parallel Intersection Studies, refined Axiom 2 (geometric vs. dynamical parallelism), clarified Axiom 3 (time as non-entity), added dimensional notes to the energy formula, downgraded residual comparison to preliminary observation, moved life conjecture to appendix with boundary statement, added cross-validation suggestion, and added reference list. Previous version files retained for traceability. This version (v1.3) further revises Axiom 2: building on v1.2's distinction between geometric parallelism'' anddynamical parallelism'', v1.3 further states that mathematical parallelism is also relative---the observation perspective of mathematical parallelism exists, the observation range is finite, and a reference frame is present; when the reference frame is changed, the definition of parallelism changes accordingly. Parallelism is therefore only an approximation under finite observational scales.