What does this equation mean?

Sorting what stands on which footing is worth doing plainly rather than blending it into a closing flourish. Observed: the paper’s measured seventy-three-of-a-hundred-and-four primacy dominance, its SPEM protocol, its appendix regression coefficients and standard errors, and the exact absence of any attention-sink citation in the published camera-ready’s Related Work section or bibliography, all drawn from the primary source and confirmed directly against it. Derived: the binomial null-model calculation showing the measured effect is not a threshold artifact, computed once from the paper’s own stated sample size and threshold rule using nothing but arithmetic. Proposed: the sink-attributable fraction $\phi_{\mathrm{sink}}$ , defined with explicit units, a stated protocol built entirely from already-released tools, and a numeric threshold on either side of which the dispute resolves — but not computed, because computing it needs compute this article does not have. Not performed: any training run, any ablation on the exact checkpoints this paper used, and any direct measurement of how much of Guo and Vosoughi’s own reported effect a sink accounts for.