Resurrection

=== Hypothetical speculations without existing technologies ===<!--in fiction and/or without underlying existing/developed technology-->
[[Russian cosmist]] [[Nikolai Fyodorovich Fyodorov]] advocated resurrection of the dead using scientific methods. Fedorov tried to plan specific actions for scientific research of the possibility of restoring life and making it infinite. His first project is connected with collecting and synthesizing decayed remains of dead based on "knowledge and control over all atoms and molecules of the world". The second method described by Fedorov is genetic-hereditary. The revival could be done successively in the ancestral line: sons and daughters restore their fathers and mothers, they in turn restore their parents and so on. This means restoring the ancestors using the hereditary information that they passed on to their children. Using this genetic method it is only possible to create a [[identical twin|genetic twin]] of the dead person. It is necessary to give back the revived person his old mind, his personality. Fedorov speculates about the idea of "radial images" that may contain the personalities of the people and survive after death. Nevertheless, Fedorov noted that even if a soul is destroyed after death, Man will learn to restore it whole by mastering the forces of decay and fragmentation.<ref>Nikolai Berdyaev, The Religion of Resusciative Resurrection. "The Philosophy of the Common Task of N. F. Fedorov.</ref>

In his 1994 book ''The Physics of Immortality'', American [[physicist]] [[Frank J. Tipler]], an expert on the [[general theory of relativity]],  presented his [[Omega Point (Tipler)|Omega Point Theory]] which outlines how a resurrection of the dead could take place at the end of the [[cosmos]].  He posits that humans will evolve into [[robots]] which will turn the entire [[cosmos]] into a [[supercomputer]] which will, shortly before the [[Big Crunch]], perform the resurrection within its [[cyberspace]], reconstructing formerly dead humans (from information captured by the [[supercomputer]] from the past [[light cone]] of the cosmos) as [[Avatar (computing)|avatars]] within its [[metaverse]].<ref>Tipler ''The Physics of Immortality''. 56-page excerpt available [http://www.randomhouse.com/catalog/display.pperl?isbn=9780385467995 here.]</ref>

[[David Deutsch]], British [[physicist]] and pioneer in the field of [[quantum computing]], formerly agreed with Tipler's Omega Point cosmology and the idea of resurrecting deceased people with the help of quantum computers<ref>David Deutsch (1997). "The Ends of the Universe". The Fabric of Reality: The Science of Parallel Universes—and Its Implications. London: Penguin Press. {{ISBN|0-7139-9061-9}}.</ref> but he is critical of Tipler's theological views.

Italian [[physicist]] and [[computer scientist]] [[Giulio Prisco]] presented the idea of "quantum archaeology",  "reconstructing the life, thoughts, memories, and feelings of any person in the past, up to any desired level of detail, and thus resurrecting the original person via 'copying to the future'".<ref>{{cite web |publisher=[[Institute for Ethics and Emerging Technologies]] | title=Technological Resurrection Concepts From Fedorov to Quantum Archeology | url=http://ieet.org/index.php/IEET/more/prisco20151011 | access-date=December 10, 2015 | date=October 11, 2015 |author= Giulio Prisco}} {{cite web|url=http://giulioprisco.blogspot.fr/2011/12/quantum-archaeology.html|title=Quantum Archaeology |author=Giulio Prisco | access-date=6 July 2015 | date=December 16, 2011}}</ref>

In their [[science fiction]] [[novel]] ''[[The Light of Other Days]]'', [[Arthur C. Clarke|Sir Arthur Clarke]] and [[Stephen Baxter (author)|Stephen Baxter]] imagine a future civilization resurrecting the dead of past ages by reaching into the past, through micro [[wormholes]] and with [[Nanorobotics|nanorobots]], to download full snapshots of [[brain]] states and memories.<ref>Arthur C. Clarke, Profiles of the Future: An Inquiry into the Limits of the Possible, Millennium [i.e., Second] Edition, Victor Gollancz – An imprint of Orion Books Ltd., 1999, p. 118: "the novel that Stephen Baxter has now written from my synopsis — The Light of Other Days."</ref>