On 5/5/2020 8:48 PM, Rupert Boleyn wrote:
>
> The objections are just about all social - cheap effective gravitics
> makes getting to and from orbit easy, even trivial.

Yup: beanstalks are a workaround for the terribly punishing terms of the
rocket equation, but when you have magic carpets (and, perhaps even more
importantly, can build them yourself, at any size you like)...

One's on the hazy edge of theoretically possible real-world engineering
and materials science, while the other is outright fantasy.

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Kelly St. Clair
xxxxxx@efn.org