Why was this downvoted? I didn't downvote you, but perhaps it's because the idea either lacks a good understanding of the scales involved, or has been effectiv

Why was this downvoted? I didn't downvote you, but perhaps it's because the idea either lacks a good understanding of the scales involved, or has been effectively disproved by the Sci-fi corpus decades ago. (Just one example of many: Haldeman's Forever War.)