Grey goo (alternatively spelled gray goo) is a hypothetical end-of-the-world scenario involving molecular nanotechnology in which out-of-control self-replicating robots consume all matter on Earth while building more of themselves, a scenario known as ecophagy ("eating the environment").
Self-replicating machines of the macroscopic variety were originally described by mathematician John von Neumann, and are sometimes referred to as von Neumann machines. The term grey goo was coined by nanotechnology pioneer Eric Drexler in his 1986 book Engines of Creation, stating that "We cannot afford certain types of accidents." In 2004 he stated "I wish I had never used the term 'grey goo'."
Read more about Grey Goo: Definition, Risks and Precautions, Popular Culture
Famous quotes containing the words grey and/or goo:
“I put away my brushes; resolutely crucified my divine gift, and while it hung writhing on the cross, spent my best years and powers cooking cabbage. “A servant of servants shall she be,” must have been spoken of women, not Negroes.”
—Jane Grey Swisshelm, U.S. newspaperwoman, abolitionist, and human rights activist. Half a Century, ch. 8 (1880)
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—William Barnes (1801–1886)