you need insane power and energy density and you need a lot of reaction area to be efficient; so part of the challenge is structural, in wing design. but actually materials and additive manufacturing and composites have gotten orders of magnitude better than even natural wings
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like if you start throwing away half the stuff at each step, you’re dead
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Live network of connected stop & streetlights, vehicles communicating to each other repeating wireless signal, stemming from an accumulation of routers dispersed along corporate locations; firewalled by a local convection to home, directing authenticated information to locations~
End of conversation
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