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Did you read the "Note" at the top of that link? From that it's clear that this is a many-decade project: if it had been started in 2011, it would only be parti

Did you read the "Note" at the top of that link? From that it's clear that this is a many-decade project: if it had been started in 2011, it would only be partially done by 2030. That would not be the "reasonable amount of time" requested by parent. Technology will improve, and eventually all sorts of things will be feasible. More reasonable plans can be hatched at that time.

lmilcin 6y ago
There is huge difference between multi-decade projects and "pure sci-fi" or "impossible". "Reasonable" is subjective to define, but there are many multi-decade projects running right now so I don't think of multi-decade projects as unreasonable. Things like sending man to the Moon or building Space Station would have been deemed "pure sci-fi" with the approach of the parent commenter.