Detection requires coupling (passive concealment is undetectable in principle).

hypothesisdetection_strategyScientific Instrumentation & Sensor Data

Adversarial review correction to the framework: 'every hide leaves a residue' is false. A maximally passive, cold, non-communicating object leaves no ongoing signal and is undetectable in principle - detection is only possible when the hider COUPLES to the environment (communicates, propels, computes, reacts). So the honest search target is INTERACTION EVENTS / coupling costs, not hidden objects.

Terminal conclusion of a two-round adversarial review of the eight detection handles. Of the eight, only the ACTIVE-coupling handles are physically mandated (below-noise leakage #2, reactive hiding #3, thermodynamic/heat #8); the rest are opportunistic search targets, not guaranteed residues. Cross-channel consistency is a false-positive FILTER, not a detector (a hider can mimic a natural template). HYPOTHESIS - a methodological correction, not a claim anything is hiding.

Connected entities

Adversarial-detection framework (hunt the cost of hiding).Detection: adversarial (reactive) hiding (randomized observation).Detection: below-noise structured signal (entropy scan).Detection: camouflage-by-taxonomy (catalog-residual mining).Detection: thermodynamic stealth (suppressed-variance IR search).