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๐Ÿ”— The Einsteinโ€“Szilรกrd Letter

๐Ÿ”— Military history ๐Ÿ”— Military history/North American military history ๐Ÿ”— Military history/United States military history ๐Ÿ”— Military history/Military science, technology, and theory ๐Ÿ”— Physics ๐Ÿ”— Military history/World War II ๐Ÿ”— Physics/History

The Einsteinโ€“Szilรกrd letter was a letter written by Leรณ Szilรกrd and signed by Albert Einstein that was sent to the United States President Franklin D. Roosevelt on August 2, 1939. Written by Szilรกrd in consultation with fellow Hungarian physicists Edward Teller and Eugene Wigner, the letter warned that Germany might develop atomic bombs and suggested that the United States should start its own nuclear program. It prompted action by Roosevelt, which eventually resulted in the Manhattan Project developing the first atomic bombs.

๐Ÿ”— Pournelle's Iron Law of Bureaucracy

๐Ÿ”— Biography ๐Ÿ”— Science Fiction ๐Ÿ”— Biography/arts and entertainment ๐Ÿ”— Journalism

Jerry Eugene Pournelle (; August 7, 1933 โ€“ September 8, 2017) was an American polymath: scientist in the area of operations research and human factors research, science fiction writer, essayist, journalist, and one of the first bloggers. In the 1960s and early 1970s, he worked in the aerospace industry, but eventually focused on his writing career. In an obituary in gizmodo, he is described as "a tireless ambassador for the future."

Pournelle is particularly known for writing hard science fiction, and received multiple awards for his writing. In addition to his solo writing, he wrote several novels with collaborators, most notably Larry Niven. Pournelle served a term as President of the Science Fiction and Fantasy Writers of America.

Pournelle's journalism focused primarily on the computer industry, astronomy, and space exploration. From the 1970s until the early 1990s, he contributed to the computer magazine Byte, writing from the viewpoint of an intelligent user, with the oft-cited credo, โ€œWe do this stuff so you wonโ€™t have to.โ€ He created one of the first blogs, entitled "Chaos Manor", which included commentary about politics, computer technology, space technology, and science fiction.

Pournelle was also known for his paleoconservative political views, which were sometimes expressed in his fiction. He was one of the founders of the Citizens' Advisory Council on National Space Policy, which developed some of the Reagan Administration's space initiatives, including the earliest versions of what would become the Strategic Defense Initiative.

๐Ÿ”— Floppy Disk Variants

๐Ÿ”— Computing ๐Ÿ”— Computing/Computer hardware

The floppy disk is a data storage and transfer medium that was ubiquitous from the mid-1970s well into the 2000s. Besides the 3ยฝ-inch and 5ยผ-inch formats used in IBM PC compatible systems, or the 8-inch format that preceded them, many proprietary floppy disk formats were developed, either using a different disk design or special layout and encoding methods for the data held on the disk.

๐Ÿ”— Gray Goo

๐Ÿ”— Technology ๐Ÿ”— Science Fiction ๐Ÿ”— Transhumanism

Gray goo (also spelled 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 more of themselves, a scenario that has been called ecophagy ("eating the environment", more literally "eating the habitation"). 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" in two paragraphs and a note, while the popularized idea of gray goo was first publicized in a mass-circulation magazine, Omni, in November 1986.

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๐Ÿ”— Greenspun's Tenth Rule

๐Ÿ”— Computing ๐Ÿ”— Systems ๐Ÿ”— Computing/Software ๐Ÿ”— Systems/Systems engineering

Greenspun's tenth rule of programming is an aphorism in computer programming and especially programming language circles that states:

Any sufficiently complicated C or Fortran program contains an ad hoc, informally-specified, bug-ridden, slow implementation of half of Common Lisp.

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๐Ÿ”— Benford's Law

๐Ÿ”— Mathematics ๐Ÿ”— Statistics

Benford's law, also called the Newcombโ€“Benford law, the law of anomalous numbers, or the first-digit law, is an observation about the frequency distribution of leading digits in many real-life sets of numerical data. The law states that in many naturally occurring collections of numbers, the leading significant digit is likely to be small. For example, in sets that obey the law, the number 1 appears as the leading significant digit about 30% of the time, while 9 appears as the leading significant digit less than 5% of the time. If the digits were distributed uniformly, they would each occur about 11.1% of the time. Benford's law also makes predictions about the distribution of second digits, third digits, digit combinations, and so on.

The graph to the right shows Benford's law for base 10. There is a generalization of the law to numbers expressed in other bases (for example, base 16), and also a generalization from leading 1 digit to leading n digits.

It has been shown that this result applies to a wide variety of data sets, including electricity bills, street addresses, stock prices, house prices, population numbers, death rates, lengths of rivers, physical and mathematical constants. Like other general principles about natural dataโ€”for example the fact that many data sets are well approximated by a normal distributionโ€”there are illustrative examples and explanations that cover many of the cases where Benford's law applies, though there are many other cases where Benford's law applies that resist a simple explanation. It tends to be most accurate when values are distributed across multiple orders of magnitude, especially if the process generating the numbers is described by a power law (which are common in nature).

It is named after physicist Frank Benford, who stated it in 1938 in a paper titled "The Law of Anomalous Numbers", although it had been previously stated by Simon Newcomb in 1881.

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๐Ÿ”— Microsoft Comic Chat

๐Ÿ”— Internet ๐Ÿ”— Computing ๐Ÿ”— Microsoft Windows ๐Ÿ”— Microsoft Windows/Computing ๐Ÿ”— Computing/Software ๐Ÿ”— Microsoft ๐Ÿ”— IRC

Microsoft Comic Chat (later Microsoft Chat, but not to be confused with Windows Chat, or WinChat) is a graphical IRC client created by Microsoft, first released with Internet Explorer 3.0 in 1996. Comic Chat was developed by Microsoft Researcher David Kurlander, with Microsoft Research's Virtual Worlds Group and later a group he managed in Microsoft's Internet Division.

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๐Ÿ”— My Dinner with Andre

๐Ÿ”— Film ๐Ÿ”— Film/French cinema ๐Ÿ”— Film/American cinema

My Dinner with Andre is a 1981 American comedy-drama film directed by Louis Malle, and written by and starring Andrรฉ Gregory (Andre) and Wallace Shawn (Wally). The actors play fictionalized versions of themselves sharing a conversation at Cafรฉ des Artistes in Manhattan. The film's dialogue covers topics such as experimental theatre, the nature of theatre, and the nature of life, and contrasts Wally's modest humanism with Andre's spiritual experiences.

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๐Ÿ”— A hypercane is a hypothetical class of extreme tropical cyclone

๐Ÿ”— Meteorology ๐Ÿ”— Tropical cyclones

A hypercane is a hypothetical class of extreme tropical cyclone that could form if ocean temperatures reached approximately 50ย ยฐC (122ย ยฐF), which is 15ย ยฐC (27ย ยฐF) warmer than the warmest ocean temperature ever recorded. Such an increase could be caused by a large asteroid or comet impact, a large supervolcanic eruption, a large submarine flood basalt, or extensive global warming. There is some speculation that a series of hypercanes resulting from an impact by a large asteroid or comet contributed to the demise of the non-avian dinosaurs. The hypothesis was created by Kerry Emanuel of MIT, who also coined the term.

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