The double-slit experiment is a paradigmatic case of measurementcontextuality in quantum mechanics. Here we reinterpret it withinthe Relational Ontology Framework (ROF), where the observer is notan external measuring apparatus but a relational node added to theoctonion-valued state sequence S0 → S → D. We simulate six observercongurations (none, passive, active, chaotic, after-screen, which-path)on a deterministic ROF-base system (seed 42, N = 30 detectors, 500bootstrap samples). The observer's eect is quantied by the asso-ciator norm F , which measures non-associativity among consecutiveoctonion states. We nd: (i) the after-screen observer (O placed afterthe detector) does not alter the past: F = Fnone = 1.4497; (ii) a pas-sive observer (O aligned with S) reduces F by 87%, corresponding torelational collapse; (iii) a chaotic observer (same random seed as thesource) reduces F by 22%, similar to the active (orthogonal) case; (iv)rotating the slit basis (e1, e2) changes the passive F by +365%, prov-ing that the basis is part of the experimental conguration. A batteryof eight falsication tests (continuous alignment, dot product, after-screen, permutation, sequence length, basis rotation, reproducibility,null separation) is fully passed. The null model (random states) issignicantly separated (Welch t-test p = 0.000). Reproducibility ismoderate (CV 38% over 10 seeds). These results support the ROFview: the double-slit experiment is a relational graph, not a wave-particle duality; the observer modies the relational topology, not awavefunction. All data are provided in a companion JSON le.
Maurizio Rizzari (Thu,) studied this question.