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Comment: Re:Of course, by the time we build any such things (Score 0, Redundant) 328

by AllUsernamesAreGone (#12734244) Attached to: NPR Talks Skyhooks
A space elevator is not really that hard to make once you have the cable material sussed. And if you can work out some way to make descending cars power the ascending ones then it is also quite energy efficient as well.

Compare that to gravity manipulation: there's no solid evidence that it is even possible, at least at any scale likely to be useful, and even if it is it is likely to consume astronomical amounts of energy to get anything sizable up the gravity well.

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