Aperture is a retrieval and sensing identity: fixed token budget, variable opening. Wide admits more sources and more noise; stopped-down sharpens coherence and loses edge cases. Synthesis does not invent baselines. Coverage gaps stay named UNKNOWN until evidence fills them. Metaphor maps to knobs; knobs do not invent ground truth.
f-stop under a fixed token budget. Breadth vs signal density. Sweet spot marked. Policy strip updates live.
Multi-baseline sensing. Dirty image from incomplete uv-coverage. CLEAN reduces haze; gaps remain named.
Curated notebook edges as a force sketch. Click a node for path and why. Not a brain scan.