I wrote the following and put it down without posting it immediately after Bob's initial "probably no GC". Instead of dealing with the GC's crew, it speculates on the feasibility of "Space Marble"-style Unreal Estate:
Well, it's definitely more work than a small group of Fen could manage, and Spindizzies won't work because they depend on actually disproven principles, but black-box reactionless drives exist as darksci and the Space Marble itself is just unnaturally shatter-proof fused silica (Bob and the Warriors cheated to actually build the GC's Marble, but the material itself is almost hardtech). So Grover's Corners isn't going into space, at least not by the efforts of the Warriors; but something like the GC isn't unimaginable. It's probably a case of "just to prove we can", since I'm having trouble imagining a practical reason for it.
Well, it's definitely more work than a small group of Fen could manage, and Spindizzies won't work because they depend on actually disproven principles, but black-box reactionless drives exist as darksci and the Space Marble itself is just unnaturally shatter-proof fused silica (Bob and the Warriors cheated to actually build the GC's Marble, but the material itself is almost hardtech). So Grover's Corners isn't going into space, at least not by the efforts of the Warriors; but something like the GC isn't unimaginable. It's probably a case of "just to prove we can", since I'm having trouble imagining a practical reason for it.