Metamonism as a Systemic Falsifier: A Noble Heresy for Testing GR and ΛCDM

We propose “systemic falsifier” protocols that leverage a radical alternative ontology—metamonism—not as a competing theory but as a device to strengthen the Popperian status of GR/ΛCDM. Case 1 uses black-hole ringdown spectroscopy to test for reproducible, multi-mode deviations of (flmn, Qlmn) from Kerr predictions; any non-detection at pre-registered precision levels (10−3 for O4/O5, 10−4 for ET/CE) reinforces GR. Case 2 deploys a two-channel jet hypothesis (narrow coherent vs. wide turbulent) to predict a stable triad of observables (radius ratio rn/rw 5%, reduced RM dispersion ratio σRM,n/σRM,w < 0.3) after rigorous deprojection and kinematic/environmental controls. Failure to detect such a pattern across VLBI/EHT/MOJAVE/BU-BLAZAR samples supports standard GR-MHD. Thus, metamonism serves as a noble heresy: either revealing targeted anomalies pointing to new physics, or tightening the empirical credentials of the standard paradigm