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Gray Goo
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 many more of themselves, a scenario that has been called ''ecophagy'' (the literal consumption of the ecosystem). The original idea assumed machines were designed to have this capability, while popularizations have assumed that machines might somehow gain this capability by accident. 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 term ''gray goo'' was coined by nanotechnology pioneer K. Eric Drexler in his 1986 book ''Engines of Creation''. 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Global Catastrophic Risk
A global catastrophic risk or a doomsday scenario is a hypothetical future event that could damage human well-being on a global scale, even endangering or destroying modern civilization. An event that could cause human extinction or permanently and drastically curtail humanity's potential is known as an "existential risk." Over the last two decades, a number of academic and non-profit organizations have been established to research global catastrophic and existential risks, formulate potential mitigation measures and either advocate for or implement these measures. Definition and classification Defining global catastrophic risks The term global catastrophic risk "lacks a sharp definition", and generally refers (loosely) to a risk that could inflict "serious damage to human well-being on a global scale". Humanity has suffered large catastrophes before. Some of these have caused serious damage but were only local in scope—e.g. the Black Death may have resulted in the de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bill Joy
William Nelson Joy (born November 8, 1954) is an American computer engineer and venture capitalist. He co-founded Sun Microsystems in 1982 along with Scott McNealy, Vinod Khosla, and Andy Bechtolsheim, and served as Chief Scientist and CTO at the company until 2003. He played an integral role in the early development of BSD UNIX while being a graduate student at Berkeley, and he is the original author of the vi text editor. He also wrote the 2000 essay " Why The Future Doesn't Need Us", in which he expressed deep concerns over the development of modern technologies. Joy was elected a member of the National Academy of Engineering (1999) for contributions to operating systems and networking software. Early career Joy was born in the Detroit suburb of Farmington Hills, Michigan, to William Joy, a school vice-principal and counselor, and Ruth Joy. He earned a Bachelor of Science in electrical engineering from the University of Michigan and a Master of Science in electrical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Decision Tree
A decision tree is a decision support tool that uses a tree-like model of decisions and their possible consequences, including chance event outcomes, resource costs, and utility. It is one way to display an algorithm that only contains conditional control statements. Decision trees are commonly used in operations research, specifically in decision analysis, to help identify a strategy most likely to reach a goal, but are also a popular tool in machine learning. Overview A decision tree is a flowchart-like structure in which each internal node represents a "test" on an attribute (e.g. whether a coin flip comes up heads or tails), each branch represents the outcome of the test, and each leaf node represents a class label (decision taken after computing all attributes). The paths from root to leaf represent classification rules. In decision analysis, a decision tree and the closely related influence diagram are used as a visual and analytical decision support tool, where t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thought Experiment
A thought experiment is a hypothetical situation in which a hypothesis, theory, or principle is laid out for the purpose of thinking through its consequences. History The ancient Greek ''deiknymi'' (), or thought experiment, "was the most ancient pattern of mathematical proof", and existed before Euclidean mathematics, where the emphasis was on the conceptual, rather than on the experimental part of a thought-experiment. Johann Witt-Hansen established that Hans Christian Ørsted was the first to use the German term ' (lit. thought experiment) circa 1812. Ørsted was also the first to use the equivalent term ' in 1820. By 1883 Ernst Mach used the term ' in a different way, to denote exclusively the conduct of a experiment that would be subsequently performed as a by his students. Physical and mental experimentation could then be contrasted: Mach asked his students to provide him with explanations whenever the results from their subsequent, real, physical experiment differed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Daniel A
''Daniel'' is an anonymous Old English poem based loosely on the Biblical Book of Daniel, found in the Junius Manuscript. The author and the date of ''Daniel'' are unknown. Critics have argued that Cædmon is the author of the poem, but this theory has been since disproved. ''Daniel'', as it is preserved, is 764 lines long. There have been numerous arguments that there was originally more to this poem than survives today. The majority of scholars, however, dismiss these arguments with the evidence that the text finishes at the bottom of a page, and that there is a simple point, which translators assume indicates the end of a complete sentence. ''Daniel'' contains a plethora of lines which Old English scholars refer to as “hypermetric” or long. Daniel is one of the four major Old Testament prophets, along with Isaiah, Jeremiah, and Ezekiel. The poet even changed the meaning of the story from remaining faithful while you are being persecuted to a story dealing with pride, which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ethics Of Technology
The ethics of technology is a sub-field of ethics addressing the ethical questions specific to the Technology Age, the transitional shift in society wherein personal computers and subsequent devices provide for the quick and easy transfer of information. Technology ethics is the application of ethical thinking to the growing concerns of technology as new technologies continue to rise in prominence The topic has evolved as technologies have developed. Technology poses an ethical dilemma on producers and consumers alike. The subject of technoethics, or the ethical implications of technology, have been studied by different philosophers such as Hans Jonas and Mario Bunge. Technoethics Technoethics (TE) is an interdisciplinary research area that draws on theories and methods from multiple knowledge domains (such as communications, social sciences, information studies, technology studies, applied ethics, and philosophy) to provide insights on ethical dimensions of technological sys ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Foresight Institute
The Foresight Institute (Foresight) is a San Francisco-based research non-profit that promotes the development of nanotechnology and other emerging technologies, such as safe AGI, biotech and longevity. Foresight runs four cross-disciplinary program tracks to research, advance, and govern maturing technologies for the long-term benefit of life and the biosphere: Molecular machines nanotechnology for building better materials, biotechnology for health extension, and computer science and crypto commerce for intelligent global cooperation. Foresight also runs a program on "existential hope", pushing forward the concept coined by Toby Ord and Owen Cotton-Barrett in their 2015 paper "Existential risk and Existential hope: Definitions", in which they wrote Foresight's stated strategy is to focus on creating a community that promotes beneficial uses of new technologies and reduce misuse and accidents potentially associated with them. Foresight runs a one-year Fellowship program aime ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Society
The Royal Society, formally The Royal Society of London for Improving Natural Knowledge, is a learned society and the United Kingdom's national academy of sciences. The society fulfils a number of roles: promoting science and its benefits, recognising excellence in science, supporting outstanding science, providing scientific advice for policy, education and public engagement and fostering international and global co-operation. Founded on 28 November 1660, it was granted a royal charter by King Charles II as The Royal Society and is the oldest continuously existing scientific academy in the world. The society is governed by its Council, which is chaired by the Society's President, according to a set of statutes and standing orders. The members of Council and the President are elected from and by its Fellows, the basic members of the society, who are themselves elected by existing Fellows. , there are about 1,700 fellows, allowed to use the postnominal title FRS (Fellow of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prince Of Wales
Prince of Wales ( cy, Tywysog Cymru, ; la, Princeps Cambriae/Walliae) is a title traditionally given to the heir apparent to the English and later British throne. Prior to the conquest by Edward I in the 13th century, it was used by the rulers of independent Wales. The first native Welsh prince was Gruffudd ap Cynan of Gwynedd, in 1137, although his son Owain Gwynedd (Owain ap Gruffudd) is often cited as having established the title. Llywelyn the Great is typically regarded as the strongest leader, holding power over the vast majority of Wales for 45 years. One of the last independent princes was Llywelyn ap Gruffydd (Llywelyn the Last), who was killed at the Battle of Orewin Bridge in 1282. His brother, Dafydd ap Gruffydd, was executed the following year. After these two deaths, Edward I of England invested his son Edward of Caernarfon as the first English prince of Wales in 1301. The title was later claimed by the heir of Gwynedd, Owain Glyndŵr (Owain ap Gruffydd), from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
King Charles III
Charles III (Charles Philip Arthur George; born 14 November 1948) is King of the United Kingdom and the 14 other Commonwealth realms. He was the longest-serving heir apparent and Prince of Wales and, at age 73, became the oldest person to accede to the British throne following the death of his mother, Elizabeth II, on 8 September 2022. Charles was born in Buckingham Palace during the reign of his maternal grandfather, King George VI, and was three when his mother ascended the throne in 1952, making him the heir apparent. He was made Prince of Wales in 1958 and his investiture was held in 1969. He was educated at Cheam and Gordonstoun schools, as was his father, Prince Philip, Duke of Edinburgh. Charles later spent six months at the Timbertop campus of Geelong Grammar School in Victoria, Australia. After earning a Bachelor of Arts degree from the University of Cambridge, Charles served in the Air Force and Navy from 1971 to 1976. In 1981, he married Lady Diana Spencer, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Molecular Machinery, Manufacturing, And Computation
A molecule is a group of two or more atoms held together by attractive forces known as chemical bonds; depending on context, the term may or may not include ions which satisfy this criterion. In quantum physics, organic chemistry, and biochemistry, the distinction from ions is dropped and ''molecule'' is often used when referring to polyatomic ions. A molecule may be homonuclear, that is, it consists of atoms of one chemical element, e.g. two atoms in the oxygen molecule (O2); or it may be heteronuclear, a chemical compound composed of more than one element, e.g. water (two hydrogen atoms and one oxygen atom; H2O). In the kinetic theory of gases, the term ''molecule'' is often used for any gaseous particle regardless of its composition. This relaxes the requirement that a molecule contains two or more atoms, since the noble gases are individual atoms. Atoms and complexes connected by non-covalent interactions, such as hydrogen bonds or ionic bonds, are typically not considere ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nanotechnology (journal)
''Nanotechnology'' is a peer-reviewed scientific journal published by IOP Publishing. It covers research in all areas of nanotechnology. The editor-in-chief is Ray LaPierre (McMaster University, Canada). Abstracting, indexing, and impact factor According to the ''Journal Citation Reports'', the journal has a 2020 impact factor of 3.874. It is indexed in the following bibliographic databases: *Chemical Abstracts *Compendex * Inspec * Web of Science *PubMed *Scopus *Astrophysics Data System *Aerospace & High Technology * EMBASE *Environmental Science and Pollution Management *International Nuclear Information System The International Nuclear Information System (INIS) hosts one of the world's largest collections of published information on the peaceful uses of nuclear science and technology. History INIS is based in Vienna, Austria and has been operating since ... References External links * {{Official website, http://iopscience.iop.org/0957-4484 Nanotechnology journals ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
