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Is Life a Form of Computation?

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  Alan Turing and John von Neumann saw it early: the logic of life and the logic of code may be one and the same. Image source: Miguel Romero, Adobe Stock Originally published in thereader.mitpress.mit.edu by Blaise Agüera y Arcas Image source: Miguel Romero, Adobe Stock   I n 1994, a strange, pixelated machine came to life on a computer screen . I t read a string of instructions, copied them, and built a clone of itself — just as the Hungarian-American Polymath John von Neumann had predicted half a century earlier . It was a striking demonstration of a profound idea: that life, at its core, might be computational. This article is adapted from Blaise Agüera y Arcas’s book “ What Is Intelligence? ” An open access edition of the book is available here . Although this is seldom fully appreciated, von Neumann was one of the first to establish a deep link between life and computation . Reproduction, like computation, he showed, could be carried out by machines following ...

Key building block for life found at Saturn's moon Enceladus

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Originally published by Southwest Research Institute, on June 14, 2023 SwRI Lead Scientist Dr. Christopher Glein was part of a team that found phosphorus, a key building block for life, from the subsurface ocean of Saturn's small moon, Enceladus. Liquid water erupts from the moon's subsurface ocean, forming a plume that contains grains of frozen ocean water. Some of these ice grains go on to form Saturn's E ring. The team analyzed Cassini spacecraft data from ice grains in the E ring, which revealed fingerprints of soluble phosphate salts from Enceladus' ocean. Credit: Cassini Imaging Team/SSI/JPL/ SWRI/ Freie Universität Berlin The search for extraterrestrial life in our solar system j ust got more exciting. A team of scientists including Southwest Research Institute 's Dr. Christopher Glein has discovered new evidence that the subsurface ocean of Saturn's moon Enceladus contains a key building block for life . The team directly detected phosphorus in th...