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🔗 Computing

Excess-3, 3-excess or 10-excess-3 binary code (often abbreviated as XS-3, 3XS or X3), shifted binary or Stibitz code (after George Stibitz, who built a relay-based adding machine in 1937) is a self-complementary binary-coded decimal (BCD) code and numeral system. It is a biased representation. Excess-3 code was used on some older computers as well as in cash registers and hand-held portable electronic calculators of the 1970s, among other uses.

🔗 Literature

"Belling the Cat" is a fable also known under the titles "The Bell and the Cat" and "The Mice in Council". Although often attributed to Aesop, it was not recorded before the Middle Ages and has been confused with the quite different fable of Classical origin titled The Cat and the Mice. In the classificatory system established for the fables by B. E. Perry, it is numbered 613, which is reserved for Mediaeval attributions outside the Aesopic canon.

🔗 Education 🔗 Homeschooling 🔗 Alternative education

Unschooling is an informal learning that advocates learner-chosen activities as a primary means for learning. Unschooling students learn through their natural life experiences including play, household responsibilities, personal interests and curiosity, internships and work experience, travel, books, elective classes, family, mentors, and social interaction. Unschooling encourages exploration of activities initiated by the children themselves, believing that the more personal learning is, the more meaningful, well-understood and therefore useful it is to the child. While courses may occasionally be taken, unschooling questions the usefulness of standard curricula, conventional grading methods, and other features of traditional schooling in the education of each unique child.

The term "unschooling" was coined in the 1970s and used by educator John Holt, widely regarded as the father of unschooling. While unschooling is often considered a subset of homeschooling and homeschooling has been subject to widespread public debate, little media attention has been given to unschooling in particular.

Critics of unschooling see it as an extreme educational philosophy, with concerns that unschooled children will lack the social skills, structure, and motivation of their schooled peers, while proponents of unschooling say exactly the opposite is true: that self-directed education in a natural environment better equips a child to handle the "real world."

🔗 Military history 🔗 Military history/Military science, technology, and theory 🔗 Military history/Weaponry 🔗 Military history/Middle Eastern military history

Zamburak (Persian: زمبورک‎), literally meaning wasp, was a specialized form of self-propelled artillery from the early modern period, featuring small cannons fired from swivel-mounts on camels. The operator of a zamburak is known as a zamburakchi. The weapon was used by the gunpowder empires, especially the Iranian empires of the Safavid dynasty, Timurid Empire and Afsharid dynasty, due to the ruggedness of the Iranian Plateau, which made typical transportation of heavy cannons problematic.

The zamburak became a deadly weapon in the 18th century. The Pashtuns used it to deadly effect in the Battle of Gulnabad, routing a numerically superior imperial Safavid army. The zamburak was also used successfully in Nader's Campaigns, when the shah and military genius Nader Shah utilized a zamburak corps in conjunction with a regular artillery corps of conventional cannon to devastating effect in numerous battles such as at the Battle of Damghan (1729), the Battle of Yeghevārd, and the Battle of Karnal.

🔗 Marine life 🔗 Animals

The Venus' flower basket (Euplectella aspergillum) is a glass sponge in the phylum Porifera. It is a marine sponge found in the deep waters of the Pacific ocean. As other glass sponges, they build their skeletons out of silica, which is of great interest in materials science as they do not require heat to form their glass latices, which in some ways makes their properties superior to manufactured fiber optics. As other sponges, they feed by filtering sea water to capture plankton.

The sponges are often found to house glass sponge shrimp, usually a breeding pair, whom are typically unable to exit the sponge's lattice due to their size. Consequently, they live in and around these sponges, where the shrimp perform a mutuallistic relationship with the sponge until they die. This may have influenced the adoption of the sponge as a symbol of undying love in Japan, where the skeletons of these sponges are presented as nuptial gifts.

🔗 United States 🔗 Television 🔗 Law 🔗 Comedy 🔗 Animation 🔗 Popular Culture 🔗 South Park 🔗 United States/American television 🔗 United States/Colorado 🔗 Star Wars 🔗 United States/Animation - American animation

In a jury trial, a Chewbacca defense is a legal strategy in which a criminal defense lawyer tries to confuse the jury rather than refute the case of the prosecutor. It is an intentional distraction or obfuscation.

As a Chewbacca defense distracts and misleads, it is an example of a red herring. It is also an example of an irrelevant conclusion, a type of informal fallacy in which one making an argument fails to address the issue in question. Often an opposing counsel can legally object to such arguments by declaring them irrelevant, character evidence, or argumentative.

The name Chewbacca defense comes from "Chef Aid", an episode of the American animated series South Park. The episode, which premiered on October 7, 1998, satirizes the O. J. Simpson murder trial—particularly attorney Johnnie Cochran's closing argument for the defense. In the episode, Cochran (voiced by Trey Parker) bases his argument on a false premise about the 1983 film Return of the Jedi. He asks the jury why a Wookiee like Chewbacca would want to live on Endor with the much smaller Ewoks when "it does not make sense". He argues that if Chewbacca living on Endor does not make sense—and if even mentioning Chewbacca in the case does not make sense—then the jury must acquit.

In the Simpson murder trial, the real Johnnie Cochran tried to convince jurors that a glove found at the crime scene, alleged to have been left by the killer, could not be Simpson's because it did not fit Simpson's hand. Because the prosecution relied on the glove as evidence of Simpson's presence at the scene, Cochran argued that the lack of fit proved Simpson's innocence: "It makes no sense; it doesn't fit; if it doesn't fit, you must acquit." "If it doesn't fit, you must acquit" was a refrain that Cochran also used in response to other points of the case.

🔗 Medicine 🔗 Economics 🔗 Books 🔗 Politics 🔗 Women writers 🔗 Medicine/Psychiatry

The Shock Doctrine: The Rise of Disaster Capitalism is a 2007 book by the Canadian author and social activist Naomi Klein. In the book, Klein argues that neoliberal free market policies (as advocated by the economist Milton Friedman) have risen to prominence in some developed countries because of a deliberate strategy of "shock therapy". This centers on the exploitation of national crises (disasters or upheavals) to establish controversial and questionable policies, while citizens are excessively distracted (emotionally and physically) to engage and develop an adequate response, and resist effectively. The book suggests that some man-made events, such as the Iraq War, were undertaken with the intention of pushing through such unpopular policies in their wake.

Some reviewers criticized the book for making what they viewed as simplifications of political phenomena, while others lauded it as a compelling and important work. The book served as the main source of a 2009 documentary feature film with the same title directed by Michael Winterbottom.

🔗 Africa 🔗 Writing systems 🔗 Igbo 🔗 Africa/Nigeria

Nsibidi (also known as nsibiri, nchibiddi or nchibiddy) is a system of symbols indigenous to what is now southeastern Nigeria that are apparently pictograms, though there have been suggestions that some are logograms or syllabograms. The symbols are at least over 4,000 years old. Early forms appeared on excavated pottery as well as what are most likely ceramic stools and headrests from the Calabar region with a range of dates from at least 400 AD (and possibly earlier), to 1400 AD. Nsibidi was used to decorate the skin, calabashes, sculptures, and clothing items, as well as to communicate messages on houses.“ There are thousands of nsibidi symbols, of which over 500 have been recorded. They were once taught in a school to children. Many of the signs deal with love affairs; those that deal with warfare and the sacred are kept secret. Nsibidi is used on wall designs, calabashes, metals (such as bronze), leaves, swords, and tattoos. It is primarily used by the Ekpe leopard society (also known as Ngbe or Egbo), a secret society that is found across Cross River State among the Ekoi, Efik, Igbo people, and other nearby peoples.

Outside knowledge of nsibidi came in 1904 when T. D. Maxwell noticed the symbols. Before the British colonisation of the area, nsibidi was divided into a sacred version and a public, more decorative version which could be used by women. Aspects of colonisation such as Western education and Christian doctrine drastically reduced the number of nsibidi-literate people, leaving the secret society members as some of the last literate in the symbols. Nsibidi was and is still a means of transmitting Ekpe symbolism. Nsibidi was transported to Cuba and Haiti via the Atlantic slave trade, where it developed into the anaforuana and veve symbols.

🔗 Death 🔗 China 🔗 Socialism

The Guangxi Massacre (simplified Chinese: 广西大屠杀; traditional Chinese: 廣西大屠殺; pinyin: Guǎngxī Dàtúshā), or Guangxi Cultural Revolution Massacre (广西文革大屠杀; 廣西文革大屠殺; Guǎngxī Wéngé Dàtúshā), was a series of events involving lynching and direct massacre in Guangxi during the Cultural Revolution (1966-1976). The official record shows an estimated death toll from 100,000 to 150,000. Methods of slaughter included beheading, beating, live burial, stoning, drowning, boiling, disemboweling, and more. In certain areas including Wuxuan County and Wuming District, massive human cannibalism occurred even though no famine existed; according to public records available, at least 137 people—perhaps hundreds more—were eaten by others and at least thousands of people participated in the cannibalism. Other researchers have pointed out that in a county alone, 421 people had been eaten, and there were reports of cannibalism across dozens of counties in Guangxi.

After the Cultural Revolution, people who were involved in the massacre or cannibalism received only minor punishments during the "Boluan Fanzheng" period; in Wuxuan County where at least 38 people were eaten, fourteen participants were prosecuted, receiving up to 14 years in prison, while ninety-one members of the Communist Party of China (CPC) were expelled from the party and thirty-nine non-party officials were either demoted or had a salary cut. Although the cannibalism was sponsored by local offices of Communist Party and militia, no direct evidence suggests that anyone in the national Communist Party leadership including Mao Zedong endorsed the cannibalism or even knew of it.

🔗 Biography 🔗 Computer science 🔗 Mathematics

Ronald Lewis Graham (born October 31, 1935) is an American mathematician credited by the American Mathematical Society as being "one of the principal architects of the rapid development worldwide of discrete mathematics in recent years". He has done important work in scheduling theory, computational geometry, Ramsey theory, and quasi-randomness.

He is the Chief Scientist at the California Institute for Telecommunications and Information Technology (also known as Cal-(IT)²) and the Irwin and Joan Jacobs Professor in Computer Science and Engineering at the University of California, San Diego (UCSD).