USSFT Paper XVI: Experimental Tests and Observational Predictions: A Systematic Catalog of Falsifiable Contact with Observation

This paper provides a systematic, honest catalog of all experimental and observational predictions generated by the USSFT framework (Papers I-XV). We classify predictions into three categories: (i) Consistency predictions that reproduce known physics (general relativity and quantum mechanics) and serve as necessary but not sufficient tests of the framework; (ii) Distinguishing predictions that are unique to USSFT and could in principle separate it from standard physics, though most are currently Planck-suppressed beyond foreseeable experimental sensitivity; and (iii) Future-derivable predictions whose magnitudes depend on quantities not yet computed from first principles (status (C)), but which become sharp, falsifiable tests once those computations are completed. We compute explicit magnitudes where the underlying derivations specify them and where a clean EFT estimate is possible. The result is a transparent assessment of where USSFT makes contact with observation today, and a concrete roadmap for where it can do so in the future. This is the sixteenth paper in the 18-paper USSFT technical series; it catalogs predictions from the full framework of Papers I-XV and Paper XVII. It builds on the lattice foundations of Paper I (DOI: 10.5281/zenodo.19622931) and the gravitational sector of Paper XII (DOI: 10.5281/zenodo.19689591). For a conceptual overview, see Paper 0 (DOI: 10.5281/zenodo.17852167, published in Int. J. Quantum Found. 12(2), 667-718, 2026).