foundation (2021) 

Why does Trantor need a space elevator? They have reusable single-stage-to-orbit space craft with apparently unlimited delta-v that seem to be able to de-orbit and re-enter to the surface in only a few minutes, compared to the 14 hours for the elevator.

re: foundation (2021) 

I mean, I'm a big rail fan and will take a full-day train ride instead of flying for an hour, so maybe everyone on the bean-stalk from geosync orbit is a trainspotter or feels flygskam at using a rocket in-atmosphere for the trip.

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