Contents page

Index (83KB)

gray goo

gray goo: n. A hypothetical substance composed of sagans of
   sub-micron-sized self-replicating robots programmed to make copies
   of themselves out of whatever is available.  The image that goes
   with the term is one of the entire biosphere of Earth being
   eventually converted to robot goo.  This is the simplest of the
   nanotechnology disaster scenarios, easily refuted by arguments
   from energy requirements and elemental abundances.  Compare blue