Radio Entelechy

How does a mind come up with the idea of how to build a radio?

An essay on entelechy — having the end within as generator rather than picture — and on the two ways of knowing: extensionally, as a list of properties an instance exhibits, and intensionally, as the generative structure itself, held isomorphic to the thing's form and free of its substrate. From Faraday seeing the rule through the iron filings, to the wave as a local coupling rule whose simultaneous execution is the wave, to Maxwell's equations closing on themselves and dissolving the ether, to the radio as crystallization rather than invention — matter shaped so a form the intellect already held can run there and be cast to another. The making ends; the knowing it fell out of was complete in itself all along.