Two "Unified Fields" — Structural Cognition vs JW Li's SUF: not a priority dispute, a domain boundary The term "Unified Field" appeared independently in multiple structural frameworks across 2025–2026, and two of them should not be conflated. JW Li's "Structural Unified Field" (SUF, September 2025) is a physical-mathematical grand unification — it claims one geometric field equation spanning physics, economics, biology, and cognition. Our "Unified Field of Structural Cognition" is a cognitive-domain project only: a seven-layer operating system for human–AI coupled cognition, governed by structural coupling (κ), not by a geometric formalism. This is not a priority dispute — Li published earlier, and that is fine. The question is what each term refers to. One claims "all complex systems share one structural field equation"; the other claims "human–AI coupled cognition follows a seven-layer OS architecture." Different domains, different methods, same name. Coupling is cognition (耦合即认知): the field's dynamics are resonance-based, not command-and-control. Distinguishing the two names prevents terminological confusion and protects the structural-cognition term's domain. 第一发现人:林小黑 (Lin Xiaohei),结构认知第一发现者 | gitee.com/samforce/structural-cognition | 公众号「今晚狗蛋看局」