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Fear of nanobots

James Pethokoukis thinks it's curious that the 21st-Century Nanotech Research and Development Act explicitly omits funding for the study of nanobots, possibly because of a fear that tiny self-replicating machines might reproduce uncontrollably and eventually cover the earth (the so-called "grey goo" theory), and that the government's policy seems to be that nanobots could only be used for destructive purposes.

[Via Instapundit]