![]() ![]() In Chapter 4, Engines Of Abundance, Drexler illustrates both exponential growth and inherent limits (not gray goo) by describing " dry" nanomachines that can function only if given special raw materials: Eric Drexler in Engines of Creation (1986). The term was first used by molecular nanotechnology pioneer K. In 2004, he stated "I wish I had never used the term 'gray goo'." Engines of Creation mentions "gray goo" as a thought experiment in two paragraphs and a note, while the popularized idea of gray goo was first publicized in a mass-circulation magazine, Omni, in November 1986. Eric Drexler in his 1986 book Engines of Creation. The term gray goo was coined by nanotechnology pioneer K. Self-replicating machines of the macroscopic variety were originally described by mathematician John von Neumann, and are sometimes referred to as von Neumann machines or clanking replicators. The original idea assumed machines were designed to have this capability, while popularizations have assumed that machines might somehow gain this capability by accident. Gray goo (also spelled as grey goo) is a hypothetical global catastrophic scenario involving molecular nanotechnology in which out-of-control self-replicating machines consume all biomass on Earth while building more of themselves, a scenario that has been called ecophagy (the literal consumption of the ecosystem). ![]()
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