SPM-EVA · Engineering prototypeAn external, machine-native multimodal memory kernel for world models. The world model perceives; SPM-EVA owns canonical identity, lineage, and recall.
Function II — record authority
Memory hides two functions — compute substrate and record authority. The field optimizes the first and assumes the second; SPM-EVA occupies the second.
Endogenous memory has three blind spots no scale can fix: it dies with the model, it cannot prove which version said what, it cannot travel across organizations.
Failure here is explicit, not silent — ambiguous recall returns REFINE_REQUIRED, never a confident wrong answer. The falsification conditions that would kill this approach are written down in advance.
A mechanically validated engineering prototype — not a finished product. The failing latency tail has been localized, not yet repaired. Detailed reports are shared under controlled technical review.