Transhumanism (sometimes abbreviated >H or H+) is an international intellectual and cultural movement supporting the use of new sciences and technologies to enhance human cognitive and physical abilities and ameliorate what it regards as undesirable and unnecessary aspects of the human condition, such as disease, aging, and death. Transhumanist thinkers study the possibilities and consequences of developing and using human enhancement techniques and other emerging technologies for these purposes. Possible dangers, as well as benefits, of powerful new technologies that might radically change the conditions of human life are also of concern to the transhumanist movement.

Although the first known use of the term "transhumanism" dates from 1957, the contemporary meaning is a product of the 1980s, when a group of scientists, artists, and futurists based in the United States began to organize what has since grown into the transhumanist movement. Transhumanist thinkers postulate that human beings will eventually be transformed into beings with such greatly expanded abilities as to merit the label "posthuman".

The transhumanist vision of a profoundly transformed future humanity has attracted many supporters as well as critics from a wide range of perspectives. Transhumanism has been described by a proponent as the "movement that epitomizes the most daring, courageous, imaginative, and idealistic aspirations of humanity," while according to a prominent critic, it is the world's most dangerous idea.

In his 2005 article A History of Transhumanist Thought, philosopher Nick Bostrom locates transhumanism's roots in Renaissance humanism and the Enlightenment. The Marquis de Condorcet, an eighteenth century French philosopher, is the first thinker whom he identifies as speculating about the use of medical science to extend the human life span. In the twentieth century, a direct and influential precursor to transhumanist concepts was J.B.S. Haldane's 1923 essay Daedalus: Science and the Future, which predicted that great benefits would come from applications of genetics and other advanced sciences to human biology.

Biologist Julian Huxley, brother of author Aldous Huxley (a childhood friend of Haldane's), appears to have been the first to use the actual word "transhumanism". Writing in 1957, he defined transhumanism as "man remaining man, but transcending himself, by realizing new possibilities of and for his human nature". This definition differs substantially from the one commonly in use since the 1980s.

The coalescence of an identifiable transhumanist movement began in the last decades of the twentieth century. In 1966, FM-2030 (formerly F.M. Esfandiary), a futurist who taught "new concepts of the Human" at The New School for Social Research in New York City, began to identify people who adopt technologies, lifestyles and world views transitional to "posthumanity" as "transhuman" (short for "transitory human"). In 1972, Robert Ettinger contributed to the popularization of the concept of "transhumanity" in his book Man into Superman. FM-2030 published the Upwingers Manifesto in 1973 to stimulate transhumanly conscious activism.

The first self-described transhumanists met formally in the early 1980s at the University of California, Los Angeles, which became the main center of transhumanist thought. Here, FM-2030 lectured on his "third way" futurist ideology. At the EZTV Media venue frequented by transhumanists and other futurists, Natasha Vita-More presented Breaking Away, her 1980 experimental film with the theme of humans breaking away from their biological limitations and the earth's gravity as they head into space. FM-2030 and Vita-More soon began holding gatherings for transhumanists in Los Angeles, which included students from FM-2030's courses and audiences from Vita-More's artistic productions. In 1982, Vita-More authored the Transhumanist Arts Statement, and, six years later, produced the cable TV show TransCentury Update on transhumanity, a program which reached over 100,000 viewers.

In 1988, philosopher Max More founded the Extropy Institute and was the main contributor to a formal transhumanist doctrine, which took the form of the Principles of Extropy in 1990.[ In 1990, he laid the foundation of modern transhumanism by giving it a new definition:

"Transhumanism is a class of philosophies that seek to guide us towards a posthuman condition. Transhumanism shares many elements of humanism, including a respect for reason and science, a commitment to progress, and a valuing of human (or transhuman) existence in this life. [] Transhumanism differs from humanism in recognizing and anticipating the radical alterations in the nature and possibilities of our lives resulting from various sciences and technologies []." In 1998, philosophers Nick Bostrom and David Pearce founded the World Transhumanist Association (WTA), an organization with a liberal democratic perspective. In 1999, the WTA drafted and adopted The Transhumanist Declaration. The Transhumanist FAQ, prepared by the WTA, gave two formal definitions for transhumanism:

The intellectual and cultural movement that affirms the possibility and desirability of fundamentally improving the human condition through applied reason, especially by developing and making widely available technologies to eliminate aging and to greatly enhance human intellectual, physical, and psychological capacities. The study of the ramifications, promises, and potential dangers of technologies that will enable us to overcome fundamental human limitations, and the related study of the ethical matters involved in developing and using such technologies. A number of similar definitions have been collected by Anders Sandberg, an academic with a high profile in the transhumanist movement.

In 2006, the board of directors of the Extropy Institute made a decision to cease operations of the organization, stating that its mission was "essentially completed". This left the World Transhumanist Association as the leading international transhumanist organization.

For a list of notable individuals who have identified themselves, or been identified by others, as advocates of transhumanism, see the list of transhumanists.

While many transhumanist theorists and advocates seek to apply reason, science and technology for the purposes of reducing poverty, disease, disability and malnutrition around the globe, transhumanism is distinctive in its particular focus on the applications of technologies to the improvement of human bodies at the individual level. Many transhumanists actively assess the potential for future technologies and innovative social systems to improve the quality of all life, while seeking to make the material reality of the human condition fulfill the promise of legal and political equality by eliminating congenital mental and physical barriers.

Transhumanist philosophers argue that there not only exists an ethical imperative for humans to strive for progress and improvement of the human condition but that it is possible and desirable for humanity to enter a post-Darwinian phase of existence, in which humans are in control of their own evolution. In such a phase, natural evolution would be replaced with deliberate change. To this end, transhumanists engage in interdisciplinary approaches to understanding and evaluating possibilities for overcoming biological limitations. They draw on futures studies and various fields or subfields of science, philosophy, economics, history, and sociology. Unlike philosophers, social critics and activists who place a moral value on preservation of natural systems, transhumanists see the very concept of the "natural" as an obstacle to progress. In keeping with this, many prominent transhumanist advocates refer to transhumanism's critics on the political right and left jointly as "bioconservatives" or "bioluddites", the latter term alluding to the nineteenth century anti-industrialisation social movement that opposed the replacement of manual labor by machines.

Converging Technologies, a 2002 report exploring the potential for synergy among nano-, bio-, informational and cognitive technologies (NBIC) for enhancing human performance.While some transhumanists take a relatively abstract and theoretical approach to the perceived benefits of emerging technologies, others have offered specific proposals for modifications to the human body, including inheritable ones. Transhumanists are often concerned with methods of enhancing the human nervous system. Though some propose modification of the peripheral nervous system, the brain is considered the common denominator of personhood and is thus a primary focus of transhumanist ambitions. More generally, transhumanists support the convergence of emerging technologies such as nanotechnology, biotechnology, information technology and cognitive science (NBIC), and hypothetical future technologies such as simulated reality, artificial intelligence, mind uploading, and cryonics. Transhumanists believe that humans can and should use these technologies to become more than human. Transhumanists therefore support the recognition or protection of cognitive liberty, morphological freedom and procreative liberty as civil liberties, so as to guarantee individuals the choice of enhancing themselves and progressively become posthuman, which they see as the next significant evolutionary steps for the human species. Some speculate that human enhancement techniques and other emerging technologies may facilitate such a transformation by the midpoint of the twenty first century.

A 2002 report, Converging Technologies for Improving Human Performance, commissioned by the U.S. National Science Foundation and Department of Commerce, contains descriptions and commentaries on the state of NBIC science and technology by major contributors to these fields. The report discusses potential uses of these technologies in implementing transhumanist goals of enhanced performance and health, and ongoing work on planned applications of human enhancement technologies in the military and in the rationalization of the human-machine interface in industry.

Some theorists, such as Raymond Kurzweil, believe that the pace of technological evolution is accelerating and that the next fifty years may yield not only radical technological advances but possibly a technological singularity, which may fundamentally change the nature of human beings. Transhumanists who foresee this massive technological change generally maintain that it is desirable. However, they also explore the possible dangers of extremely rapid technological change, and frequently propose options for ensuring that advanced technology is used responsibly. For example, Bostrom has written extensively on existential risks to humanity's future welfare, including risks that could be created by emerging technologies.

On a more practical level, as proponents of personal development and body modification, transhumanists tend to use existing technologies and techniques that supposedly improve cognitive and physical performance, while engaging in routines and lifestyles designed to improve health and longevity. Depending on their age, some transhumanists express concern that they will not live to reap the benefits of future technologies. However, many have a great interest in life extension practices, and funding research in cryonics in order to make the latter a viable option of last resort rather than remaining an unproven method. Regional and global transhumanist networks and communities with a range of objectives exist to provide support and forums for discussion and collaborative projects.

There is a variety of opinion within transhumanist thought. Many of the leading transhumanist thinkers hold complex and subtle views that are under constant revision and development. Some distinctive currents of transhumanism are identified and listed here in alphabetical order:

Although some transhumanists report a very strong sense of spirituality, they are for the most part secular. In fact, many transhumanists are either agnostics or atheists. A minority, however, follow liberal forms of Eastern philosophical traditions or, as with Mormon transhumanists, have merged their beliefs with established religions.

Despite the prevailing secular attitude, some transhumanists pursue hopes traditionally espoused by religions, such as immortality albeit a physical one. Several belief systems, termed new religious movements, originating in the late twentieth century, share with transhumanism the goals of transcending the human condition by applying technology to the alteration of the body (Ralism) and mind (Scientology). While most thinkers associated with the transhumanist movement focus on the practical goals of using technology to help achieve longer and healthier lives, some speculate that future understanding of neurotheology will enable humans to achieve control of altered states of consciousness and thus "spiritual" experiences. A continuing dialogue between transhumanism and faith was the focus of an academic seminar held at the University of Toronto in 2004.

The majority of transhumanists are materialists who do not believe in a transcendent human soul. Transhumanist personhood theory also argues against the unique identification of moral actors and subjects with biological humans, judging as speciesist the exclusion of nonhuman and part-human animals, and sophisticated machines, from ethical consideration. Many believe in the compatibility of human minds with computer hardware, with the theoretical implication that human consciousness may someday be transferred to alternative media.

One extreme formulation of this idea is Frank Tipler's proposal of the Omega Point. Drawing upon ideas in physics, computer science and physical cosmology, Tipler advanced the notion that the collapse of the Universe billions of years hence could create the conditions for the perpetuation of humanity as a simulation within a megacomputer. Cosmologist George Ellis has called Tipler's book "a masterpiece of pseudoscience", and Michael Shermer devoted a chapter of Why People Believe Weird Things to enumerating perceived flaws in Tipler's thesis.

For more details on this topic, see Transhumanism in fiction. Transhumanist themes have become increasingly prominent in various literary forms during the period in which the movement itself has emerged. Contemporary science fiction often contains positive renditions of technologically enhanced human life, set in utopian (especially techno-utopian) societies. However, science fiction's depictions of technologically enhanced humans or other posthuman beings frequently come with a cautionary twist. The more pessimistic scenarios include many horrific or dystopian tales of human bioengineering gone wrong.

The cyberpunk genre, exemplified by William Gibson's Neuromancer (1984) and Bruce Sterling's Schismatrix (1985), has particularly been concerned with the modification of human bodies. Other novels dealing with transhumanist themes that have stimulated broad discussion of these issues include Blood Music (1985) by Greg Bear, The Xenogenesis Trilogy (19871989) by Octavia Butler; the "Culture" novels (19872000) of Iain Banks; The Beggar's Trilogy (199094) by Nancy Kress; much of Greg Egan's work since the early 1990s, such as Permutation City (1994) and Diaspora (1997); The Bohr Maker (1995) by Linda Nagata; Extensa (2002) and Perfekcyjna niedoskonao (2003) by Jacek Dukaj; Oryx and Crake (2003) by Margaret Atwood; Altered Carbon by Richard Morgan (2002); and The Possibility of an Island (Eng. trans. 2006) by Michel Houellebecq.

Fictional transhumanist scenarios have also become popular in other media during the late twentieth and early twenty first centuries. Such treatments are found in films (Star Trek: The Motion Picture, 1979; Blade Runner, 1982; Gattaca, 1997), television series (the Ancients of Stargate SG-1, the Borg of Star Trek, the Nietzscheans of Andromeda), manga and anime (Ghost in the Shell), role-playing games (Transhuman Space) and computer games (Deus Ex, Half-Life 2, Command & Conquer). The fictional universe of the table top war game Warhammer 40,000 also makes use of genetic and cybernetic augmentation. Human characters of the Imperium often employ cybernetic devices, while the Space Marines are indeed posthuman. Many of these works are considered part of the cyberpunk genre or its postcyberpunk offshoot.

In addition to the work of Natasha Vita-More, mentioned above, transhumanism has been represented in the visual and performing arts by Carnal Art, a form of sculpture originated by the French artist Orlan that uses the body as its medium and plastic surgery as its method. The American performer Michael Jackson used technologies such as plastic surgery, skin-lightening drugs and hyperbaric oxygen treatment over the course of his career, with the effect of transforming his artistic persona so as to blur identifiers of gender, race and age. The work of the Australian artist Stelarc centers on the alteration of his body by robotic prostheses and tissue engineering. Other artists whose work coincided with the emergence and flourishing of transhumanism and who explored themes related to the transformation of the body are the Yugoslavian performance artist Marina Abramovic and the American media artist Matthew Barney. A 2005 show, Becoming Animal, at the Massachusetts Museum of Contemporary Art, presented exhibits by twelve artists whose work concerns the effects of technology in erasing boundaries between the human and non-human.

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