System Architecture Archaeology in Practice — A Negative Case: Study III The Klerksdorp Spheres and the Formal Rejection of a Pseudo-Artifact

This preprint presents the third case study in the System Architecture Archaeology (SAA) research program, applying its forensic framework to the Klerksdorp Spheres of South Africa—one of the most famous “mystery objects” in popular archaeology. Unlike previous SAA case studies, this analysis produces a formally negative result. Using SAA’s three diagnostic gates—Institutional Intent, Structural Mirroring, and Operational Semiotics—the spheres are evaluated for evidence of belonging to a lost technical or administrative system. Although their symmetry and grooves have inspired decades of speculation, all three gates fail when tested against established geological evidence. Mineralogical and stratigraphic studies identify the spheres as natural pyrophyllite and hematite concretions formed through geological processes, not manufactured artifacts. Within SAA, they are classified as Hardware Mimicry—natural forms that resemble tools but are not part of any institutional system. This negative result is methodologically important: it demonstrates that SAA can reject pseudo-artifacts as well as identify genuine “orphaned interfaces,” strengthening the framework’s scientific credibility.