Measurement‑hierarchy test for neurotech

Evaluate neurotechnology by an explicit measurement hierarchy: rank whether the system reads spikes, local field potentials, hemodynamics, or extracranial fields, and require claims to be anchored to where they sit in that hierarchy. Require provenance (sampling rate, spatial resolution, latency, and physiological intermediaries) as part of any public claim about capability. — Adopting a standard 'measurement‑hierarchy' rubric would reduce hype, improve regulatory thresholds, and make funding and ethics debates about neurotech evidence‑based rather than rhetorical.