timtyler comments on Existential Risk - Less Wrong
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Not only is the picture slightly sci-fi and weird, it's also wrong. I mean, my thought processes on seeing it went something like this: "Oh, hey, it's a ringworld. Presumably this is meant to hint at the glorious future that might be ahead of us if we don't get wiped out, and therefore the importance of not getting wiped ou ... no, wait a moment, it's kinda like a ringworld but it's really really really small. Much smaller than the earth. What the hell's the point of that?"
Faster build, reduced cost, not such heavy stresses placed on the materials.
I meant "what's the point of that, as opposed to not bothering?". Not "what's the point of that, as opposed to building a full-sized ringworld?".