Admissibility Standing and the Elimination of Epistemic Surrogates

This paper establishes a structural constraint on epistemic legitimacy: admissibility and standing jointly exclude the use of epistemic surrogates in theory-level reasoning. It proves that any attempt to substitute approximation, instrumental success, consensus, or pragmatic adequacy for admissible reference fixation destroys standing, even when empirical performance appears robust. The result is eliminative rather than constructive. The paper does not propose alternative surrogates, nor does it offer a repair strategy for surrogate-based reasoning. Instead, it shows that surrogates function by masking reference instability, scope drift, or deferred fixation, allowing apparent confirmation without legitimate attachment to a determinate theoretical claim. The analysis blocks a broad class of inferences in which explanatory utility, predictive success, or methodological convention is taken to justify epistemic commitment. It demonstrates that such moves preserve agreement while silently abandoning admissibility, thereby collapsing theory-level claims into non-binding descriptions. This work is purely boundary-setting. It introduces no new primitives, no operational tests, and no enforcement mechanisms. Its contribution is to clarify why standing cannot be earned, accumulated, or approximated through surrogate measures, and why admissibility is the only basis on which epistemic legitimacy can be preserved at all.