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FTL and antigravity violate physical law. Drexler’s designs just don’t. Point me to a design in Nanosystems the that is physically impossible to construct.

The point of Nanosystems was to explore what technologies are feasible given our current understanding of physics at that scale. It turns out there is a lot of latent potential there.

Both FTL and antigravity have about more evidence in their favor (white juday interferometers, while probably bullshit, are at least physical) as nanotech.

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