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🔗 Business 🔗 Psychology 🔗 Alternative Views 🔗 Education

In the field of psychology, the Dunning–Kruger effect is a cognitive bias in which people assess their cognitive ability as greater than it is. It is related to the cognitive bias of illusory superiority and comes from the inability of people to recognize their lack of ability. Without the self-awareness of metacognition, people cannot objectively evaluate their competence or incompetence.

As described by social psychologists David Dunning and Justin Kruger, the cognitive bias of illusory superiority results from an internal illusion in people of low ability and from an external misperception in people of high ability; that is, "the miscalibration of the incompetent stems from an error about the self, whereas the miscalibration of the highly competent stems from an error about others."

🔗 Animation

"Shave and a Haircut" and the associated response "two bits" is a seven-note musical call-and-response couplet, riff or fanfare popularly used at the end of a musical performance, usually for comedic effect. It is used melodically or rhythmically, for example as a door knocker.

"Two bits" is a term in the United States and Canada for 25 cents, equivalent to a U.S. quarter. "Four bits" and "Six bits" are also occasionally used, for example in the cheer "Two bits, four bits, six bits, a dollar." The final words may also be "get lost", "drop dead" (in Australia), or some other facetious expression. In the UK, it was often said as "five bob" (slang for five shillings), although words are now rarely used to accompany the rhythm or the tune.

🔗 Biology 🔗 Astronomy 🔗 Color 🔗 Evolutionary biology

The Purple Earth Hypothesis (PEH) is an astrobiological hypothesis, first proposed by molecular biologist Shiladitya DasSarma in 2007, that the earliest photosynthetic life forms of Early Earth were based on the simpler molecule retinal rather than the more complex porphyrin-based chlorophyll, making the surface biosphere appear purplish rather than its current greenish color. It is estimated to have occurred between 3.5 and 2.4 billion years ago during the Archean eon, prior to the Great Oxygenation Event and Huronian glaciation.

Retinal-containing cell membranes exhibit a single light absorption peak centered in the energy-rich green-yellow region of the visible spectrum, but transmit and reflect red and blue light, resulting in a magenta color. Chlorophyll pigments, in contrast, absorb red and blue light, but little or no green light, which results in the characteristic green reflection of plants, green algae, cyanobacteria and other organisms with chlorophyllic organelles. The simplicity of retinal pigments in comparison to the more complex chlorophyll, their association with isoprenoid lipids in the cell membrane, as well as the discovery of archaeal membrane components in ancient sediments on the Early Earth are consistent with an early appearance of life forms with purple membranes prior to the turquoise of the Canfield ocean and later green photosynthetic organisms.

🔗 Africa 🔗 Philosophy 🔗 Philosophy/Anarchism 🔗 Somalia

Xeer (pronounced [ħeːr]) is the traditional legal system of Somalia, and one of the three systems from which formal Somali law draws its inspiration, the others being civil law and Islamic law. It is believed to pre-date Islam, although it was influenced by Islam and retains many of the faith's conservative elements. Under this system, elders, known as the xeer begti serve as mediator judges and help settle court cases, taking precedent and custom into account. Xeer is polycentric in that different groups within Somali society have different interpretations of xeer.

🔗 Philosophy 🔗 Philosophy/Epistemology

In philosophy and psychology, an alief is an automatic or habitual belief-like attitude, particularly one that is in tension with a person's explicit beliefs.

For example, a person standing on a transparent balcony may believe that they are safe, but alieve that they are in danger. A person watching a sad movie may believe that the characters are completely fictional, but their aliefs may lead them to cry nonetheless. A person who is hesitant to eat fudge that has been formed into the shape of feces, or who exhibits reluctance in drinking from a sterilized bedpan may believe that the substances are safe to eat and drink, but may alieve that they are not.

The term alief was introduced by Tamar Gendler, a professor of philosophy and cognitive science at Yale University, in a pair of influential articles published in 2008. Since the publication of these original articles, the notion of alief has been utilized by Gendler and others — including Paul Bloom and Daniel Dennett — to explain a range of psychological phenomena in addition to those listed above, including the pleasure of stories, the persistence of positive illusions, certain religious beliefs, and certain psychiatric disturbances, such as phobias and obsessive–compulsive disorder.

🔗 Fashion

The Great Male Renunciation (French: Grande Renonciation masculine) is the historical phenomenon at the end of the 18th century in which Western men stopped using bright colours, elaborate shapes and variety in their dress, which were left to women's clothing. Instead men concentrated on minute differences of cut, and the quality of the plain cloth.

Coined by the Anglo-German psychologist John Flügel in 1930, it is considered a major turning point in the history of clothing in which the men relinquished their claim to adornment and beauty. Flugel asserted that men "abandoned their claim to be considered beautiful" and "henceforth aimed at being only useful". The Great Renunciation encouraged the establishment of the suit's monopoly on male dress codes at the beginning of the 19th century.

🔗 Biography 🔗 Soviet Union 🔗 Computing 🔗 Computer science 🔗 Women scientists 🔗 Biography/science and academia 🔗 Ukraine

Kateryna Lohvynivna Yushchenko (Ukrainian: Катерина Логвинівна Ющенко, Russian: Екатерина Логвиновна Ющенко, December 8, 1919, Chyhyryn - died August 15, 2001) was a Ukrainian computer and information research scientist, corresponding member of USSR Academy of Sciences (1976), and member of The International Academy of Computer Science. She developed one of the world's first high-level languages with indirect address in programming, called the Address programming language. Over the period of her academic career, Yushchenko supervised 45 Ph.D students. Further professional achievements include Yushchenko being awarded two USSR State Prizes, The USSR Council of Ministers Prize, The Academician Glushkov Prize, and The Order of Princess Olga. Yushchenko was the first woman in the USSR to become a Doctor of Physical and Mathematical Sciences in programming.

🔗 Environment 🔗 Death 🔗 Agriculture 🔗 Mammals 🔗 Agriculture/Livestock

A Judas goat is a trained goat used in general animal herding. The Judas goat is trained to associate with sheep or cattle, leading them to a specific destination. In stockyards, a Judas goat will lead sheep to slaughter, while its own life is spared. Judas goats are also used to lead other animals to specific pens and onto trucks. They have fallen out of use in recent times, but can still be found in various smaller slaughterhouses in some parts of the world, as well as conservation projects.

Cattle herders may use a Judas steer to serve the same purpose as a Judas goat. The technique, and the term, originated from cattle drives in the United States in the 1800s.

The term is a reference to Judas Iscariot, an apostle of Jesus Christ who betrayed Jesus in the Bible.

🔗 Film 🔗 Military history 🔗 Film/American cinema 🔗 Science Fiction 🔗 Military history/Cold War 🔗 Cold War 🔗 Military history/War films

Colossus: The Forbin Project (originally released as Colossus) is a 1970 American science-fiction thriller film from Universal Pictures, produced by Stanley Chase, directed by Joseph Sargent, and starring Eric Braeden, Susan Clark, Gordon Pinsent, and William Schallert. It is based on the 1966 science-fiction novel Colossus by Dennis Feltham Jones.

The film is about an advanced American defense system, named Colossus, which becomes sentient. After being given full control, Colossus' draconian logic expands on its original nuclear defense directives to assume total control of the world and end all warfare for the good of humankind, despite its creators' orders to stop.