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🔗 Mathematics 🔗 Books 🔗 India 🔗 Pakistan 🔗 India/Indian history workgroup

The Bakhshali manuscript is an ancient Indian mathematical text written on birch bark that was found in 1881 in the village of Bakhshali, Mardan (near Peshawar in present-day Pakistan, historical Gandhara). It is perhaps "the oldest extant manuscript in Indian mathematics". For some portions a carbon-date was proposed of AD 224–383 while for other portions a carbon-date as late as AD 885–993 in a recent study, but the dating has been criticised by specialists on methodological grounds (Plofker et al. 2017 and Houben 2018 §3). The manuscript contains the earliest known Indian use of a zero symbol. It is written in a form of literary Sanskrit influenced by contemporary dialects.

🔗 Computing 🔗 Systems 🔗 Business 🔗 Computing/Software 🔗 Computing/Computer science 🔗 Engineering 🔗 Systems/Systems engineering

Hofstadter's law is a self-referential adage, coined by Douglas Hofstadter in his book Gödel, Escher, Bach: An Eternal Golden Braid (1979) to describe the widely experienced difficulty of accurately estimating the time it will take to complete tasks of substantial complexity:

Hofstadter's Law: It always takes longer than you expect, even when you take into account Hofstadter's Law.

The law is often cited by programmers in discussions of techniques to improve productivity, such as The Mythical Man-Month or extreme programming.

🔗 Psychology 🔗 Cognitive science

Functional fixedness is a cognitive bias that limits a person to use an object only in the way it is traditionally used. The concept of functional fixedness originated in Gestalt psychology, a movement in psychology that emphasizes holistic processing. Karl Duncker defined functional fixedness as being a "mental block against using an object in a new way that is required to solve a problem". This "block" limits the ability of an individual to use components given to them to complete a task, as they cannot move past the original purpose of those components. For example, if someone needs a paperweight, but they only have a hammer, they may not see how the hammer can be used as a paperweight. Functional fixedness is this inability to see a hammer's use as anything other than for pounding nails; the person couldn't think to use the hammer in a way other than in its conventional function.

When tested, 5-year-old children show no signs of functional fixedness. It has been argued that this is because at age 5, any goal to be achieved with an object is equivalent to any other goal. However, by age 7, children have acquired the tendency to treat the originally intended purpose of an object as special.

🔗 United States 🔗 Politics 🔗 Politics/American politics

The Howard Dean scream incident, commonly known as the Dean scream speech, was an energetic scream by Howard Dean, the former governor of Vermont, on January 19, 2004, during a speech he gave at the Val-Air Ballroom in West Des Moines, Iowa. That night, the presidential candidate had just lost the Iowa caucus to John Kerry and wanted to reassure his supporters. He listed states he would win to a raucous audience before screaming "BYAH!" Within four days, it was broadcast 633 times on national news networks and cable channels.

Following the scream, Dean lost more primaries and suspended his campaign following his third-place result in Wisconsin. Some commentators have described the speech as a political gaffe that destroyed Dean's campaign; however, Dean and his campaign staff have claimed that he would have lost anyway, due to poor campaign organization. Additionally, Christine Pelosi, Pacific Standard, and historian Robert Thompson have all claimed that Dean's probability of being nominated was already low due to a lack of party insider support, the Iowa loss, and the media's previous painting of Dean as too hot-tempered for the presidency.

🔗 Biology 🔗 Engineering 🔗 Science

Xenobots, named after the African clawed frog (Xenopus laevis), are synthetic organisms that are automatically designed by computers to perform some desired function and built by combining together different biological tissues.

Xenobots are less than a 1 millimeter (0.039 inches) wide and composed of just two things: skin cells and heart muscle cells, both of which are derived from stem cells harvested from early (blastula stage) frog embryos. The skin cells provide rigid support and the heart cells act as small motors, contracting and expanding in volume to propel the xenobot forward. The shape of a xenobot's body, and its distribution of skin and heart cells, are automatically designed in simulation to perform a specific task, using a process of trial and error (an evolutionary algorithm). Xenobots have been designed to walk, swim, push pellets, carry payloads, and work together in a swarm to aggregate debris scattered along the surface of their dish into neat piles. They can survive for weeks without food and heal themselves after lacerations.

🔗 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.

🔗 Transport 🔗 Urban studies and planning

A road diet (also called a lane reduction, road rechannelization or road conversion) is a technique in transportation planning whereby the number and/or the width of travel lanes of the road is reduced, often to achieve a reduction in crash rates.

🔗 Video games 🔗 Internet culture 🔗 Animation 🔗 Translation studies 🔗 Video games/Sega 🔗 Animation/Computer animation 🔗 Animation/Web animation

"All your base are belong to us" is an Internet meme based on a poorly translated phrase from the opening cutscene of the Japanese video game Zero Wing. The phrase first appeared on the European release of the 1991 Sega Mega Drive conversion of the 1989 Japanese arcade game.

By the early 2000s, a GIF animation depicting the opening text became widespread on web forums. A music video accompanied by a techno remix of the clip, originally posted on the website Newgrounds, gained popularity and became a derivative Internet meme in its own right. The original meme has been referenced many times in media outside of the forums.

The original phrase in Japanese, uttered by the enigmatic antagonist "CATS", is "君達の基地は、全てCATSがいただいた" (Hepburn Romanization: Kimitachi no kichi wa subete CATS ga itadaita), which can be translated more accurately as "All of your bases have been taken over by CATS" (see the transcript below).

🔗 Architecture

A saw-tooth roof is a roof comprising a series of ridges with dual pitches either side. The steeper surfaces are glazed to admit daylight and face away from the equator to shield workers and machinery from direct sunlight. This kind of roof admits natural light into a deep plan building or factory. It was therefore most commonly built during the Machine Age from the mid-nineteenth century to the mid-twentieth, when electrification of factories was not yet common.

Many factories of the era had little or no electrical wiring; their main power sources for the machinery were often steam engines driving line shafting, and the lighting was chiefly via daylighting through the windows. Work done at night, when necessary, was typically lit by oil lamps and candles, but many factories closed for the night. Their norm of an early working day (for example, 6 a.m. to 4 p.m.) was not merely a tradition but a functional decision based on this reliance on daylighting. The same was true of the farmer's workday, for the same reason.

🔗 Death 🔗 Law 🔗 Romania

The trial of Nicolae and Elena Ceaușescu was held on 25 December 1989 by an Exceptional Military Tribunal, a drumhead court-martial created at the request of a newly formed group called the National Salvation Front. Its outcome was pre-determined, and it resulted in guilty verdicts and death sentences for former Romanian President and Romanian Communist Party General Secretary, Nicolae Ceaușescu, and his wife, Elena Ceaușescu.

The main charge was genocide— namely, murdering "over 60,000 people" during the revolution in Timișoara. Other sources put the death toll between 689 and 1,200. Nevertheless, the charges did not affect the trial. General Victor Stănculescu had brought with him a specially selected team of paratroopers from a crack regiment, handpicked earlier in the morning to act as a firing squad. Before the legal proceedings began, Stănculescu had already selected the spot where the execution would take place: along one side of the wall in the barracks' square.

Nicolae Ceaușescu refused to recognize the tribunal, arguing its lack of constitutional basis and claiming that the revolutionary authorities were part of a Soviet plot.