SDT holds space, matter, movement and now, and derives the rest. Each investigation below works inside that framework — deriving a prediction and gating it against measurement, with the assessment on the record. Open any card to read it in full.
As of August 2026: nuclear seating is closed as geometry. Fission is a flay of unfrozen shells around a sealed T12 core, not a liquid-drop split (NP35). Le Sage heating is a corpuscle-in-void objection — it does not apply; the lattice is the space. Koppa origin and a native action distinct from ℏ remain parked. The cards below are the live tree; they are not a second source of truth ahead of laws.hpp.