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Speculative nanotechnology should cover:
A.
molecular nanotechnology involving manipulating single molecules in finely controlled, deterministic ways
B.
nanorobotics or nanorobots that center on self-sufficient machines of some functionality operating at the nanoscale
C.
productive nanosystems that are able to produce atomically precise parts for other nanosystems, not necessarily using novel nanoscale-emergent properties, but well-understood fundamentals of manufacturing
D.
programmable matters that seek to design materials whose properties can be easily, reversibly & externally controlled though a fusion of information science & materials science