Spillgain: A Sequel to Flight Path of a Fly With a Head/《一只有头苍蝇的飞行路径》续篇——收溢

This report is a continuation of Flight Path of a Fly With a Head (DOI: 10.5281/zenodo.21395658). Starting from a conceptual gap between "use" and "exploit" in Chinese, it coins the term 收溢(spillgain) to describe a cognitive acquisition pattern: when a tool performs its designed function normally, it spills out cognitive by-products beyond the user's intended boundary—such as ideas, frameworks, counterexamples, and conceptual structures—which the user recognizes as valuable and takes away. The report further analyzes the two-layer wall structure: the outer wall (lagging institutional classification systems) and the inner wall (psychological self-defense against acknowledging blurred originality boundaries), and how they reinforce each other in a closed loop. Spillgain is not a taxonomic category but an ethical concept—it is a mirror that reflects whether one is willing to admit that the boundary of one's own originality is more blurred than assumed. 本报告是《一只有头苍蝇的飞行路径》(Flight Path of a Fly With a Head, DOI: 10.5281/zenodo.21395658)的续篇。报告从“使用”和“利用”之间的概念空缺出发,造出“收溢(spillgain)”一词——指工具在正常执行设计功能的过程中,溢出设计范围之外的认知副产品(思路、框架、反例、概念结构),用户识别出副产品有用并拿走的认知获取模式。报告进一步分析了内墙(人的心理防御)与外墙(制度分类系统滞后)的双层结构,以及它们如何互相支撑形成闭环。收溢不是分类概念,是伦理概念:它是一面镜子,照人是否愿意承认自己的原创性边界比以为的更模糊。