The Grand Unified Theory of Classical Physics, a 1771‑page work that he’s self-published on his Web site. It claims to offer explanations with no “spookiness or weirdness” for quantum phenomena like entanglement, as well as some extraordinary predictions: that under certain conditions electrons acquire antigravity properties, which Mills calls “the fifth force,” and that the mysterious dark matter permeating the universe consists of large hydrino agglomerations.