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🔗 Film 🔗 Film/American cinema 🔗 Science Fiction 🔗 Comedy

Dark Star is a 1974 American independent science fiction comedy film produced, scored and directed by John Carpenter and co-written with Dan O'Bannon. It follows the crew of the deteriorating starship Dark Star, twenty years into their mission to destroy unstable planets that might threaten future colonization of other planets.

Beginning as a University of Southern California (USC) student film produced from 1970 to 1972, it was gradually expanded with reshoots in 1973, eventually appearing in its current feature-length form at Filmex in March 1974, and subsequently received a limited theatrical release in 1975. Its final budget is estimated at $60,000. While initially unsuccessful with audiences, it was relatively well received by critics, and continued to be shown in theaters as late as 1980. The home video revolution of the early 1980s helped the movie achieve "cult classic" status. O'Bannon collaborated with home video distributor VCI in the production of releases on VHS, LaserDisc, DVD, and eventually Blu-ray.

Dark Star was Carpenter's feature directorial debut; he also scored the film. It was also the feature debut for O'Bannon, who also served as editor, production designer, and visual effects supervisor, and appeared as Sergeant Pinback.

🔗 Business 🔗 Engineering 🔗 Japan 🔗 Japan/Science and technology 🔗 Japan/Business and economy

Poka-yoke (ポカヨケ, [poka yoke]) is a Japanese term that means "mistake-proofing" or "inadvertent error prevention". A poka-yoke is any mechanism in any process that helps an equipment operator avoid (yokeru) mistakes (poka). Its purpose is to eliminate product defects by preventing, correcting, or drawing attention to human errors as they occur. The concept was formalised, and the term adopted, by Shigeo Shingo as part of the Toyota Production System. It was originally described as baka-yoke, but as this means "fool-proofing" (or "idiot-proofing") the name was changed to the milder poka-yoke.

🔗 California 🔗 California/San Francisco Bay Area 🔗 Microsoft Windows 🔗 Software 🔗 Software/Computing 🔗 Photography 🔗 Photography/History of photography

Bliss, originally titled Bucolic Green Hills, is the default wallpaper of Microsoft's Windows XP operating system. It is a photograph of green rolling hills and daytime sky with cirrus clouds. Charles O'Rear, a former National Geographic photographer, took the photo in January 1996 near the Napa–Sonoma county line, California, after a phylloxera infestation forced vineyards to be cleared from the hill years prior. He used a Mamiya RZ67 camera and Fujifilm's Velvia film to create the photograph; O'Rear remarked that he did not enhance or manipulate the photograph.

Initially a stock photo available through his photo agency Westlight that was acquired by Bill Gates' Corbis in 1998, Microsoft obtained full rights of the photograph in 2000 and then used it to promote Windows XP. Bliss received positive reception from reviewers, and has been speculated to be the most viewed photograph in history by Microsoft and journalists. Microsoft has reused the photograph in several promotions since the release of Windows XP. Photographers have attempted to re-create the iconic image, but the rolling hill has since become a vineyard again.

🔗 Computing

Macintosh Common Lisp (MCL) is an implementation and IDE for the Common Lisp programming language. Various versions of MCL run under the classic Mac OS (m68k and PPC) and Mac OS X.

Versions of MCL up to and including 5.1 are proprietary. Version 5.2 has been open sourced.

In 2009 a new different version of MCL has been open sourced: RMCL. RMCL is based on MCL 5.1 and does run under Rosetta on Intel-based Macs.

The One-Time Wealth Tax for State-Funded Health Care Programs Initiative, commonly referred to as the California billionaire tax or California wealth tax, is a combined initiated constitutional amendment and state statute proposed for the November 3, 2026, ballot in the state of California.

If approved and passed, the state's billionaires would pay a one-time 5% tax on their accumulated wealth to fund health care programs, food assistance and public education.

🔗 Mathematics 🔗 Statistics

Simpson's paradox, which goes by several names, is a phenomenon in probability and statistics, in which a trend appears in several different groups of data but disappears or reverses when these groups are combined. This result is often encountered in social-science and medical-science statistics and is particularly problematic when frequency data is unduly given causal interpretations. The paradox can be resolved when causal relations are appropriately addressed in the statistical modeling.

Simpson's paradox has been used as an exemplar to illustrate to the non-specialist or public audience the kind of misleading results mis-applied statistics can generate. Martin Gardner wrote a popular account of Simpson's paradox in his March 1976 Mathematical Games column in Scientific American.

Edward H. Simpson first described this phenomenon in a technical paper in 1951, but the statisticians Karl Pearson et al., in 1899, and Udny Yule, in 1903, had mentioned similar effects earlier. The name Simpson's paradox was introduced by Colin R. Blyth in 1972.

It is also referred to as or Simpson's reversal, Yule–Simpson effect, amalgamation paradox, or reversal paradox.

🔗 Chess

Zugzwang (German for "compulsion to move", pronounced [ˈtsuːktsvaŋ]) is a situation found in chess and other turn-based games wherein one player is put at a disadvantage because they must make a move when they would prefer to pass and not move. The fact that the player is compelled to move means that their position will become significantly weaker. A player is said to be "in zugzwang" when any possible move will worsen their position.

Although the term is used less precisely in games such as chess, it is used specifically in combinatorial game theory to denote a move that directly changes the outcome of the game from a win to a loss. Putting the opponent in zugzwang is a common way to help the superior side win a game, and in some cases it is necessary in order to make the win possible.

The term zugzwang was used in German chess literature in 1858 or earlier, and the first known use of the term in English was by World Champion Emanuel Lasker in 1905. The concept of zugzwang was known to chess players many centuries before the term was coined, appearing in an endgame study published in 1604 by Alessandro Salvio, one of the first writers on the game, and in shatranj studies dating back to the early 9th century, over 1000 years before the first known use of the term.

Positions with zugzwang occur fairly often in chess endgames, especially in king and pawn endgames. According to John Nunn, positions of reciprocal zugzwang are surprisingly important in the analysis of endgames.

🔗 Biology

The thermal grill illusion is a sensory illusion originally demonstrated in 1896 by the Swedish physician Torsten Thunberg. The illusion is created by an interlaced grill of warm (e.g., 40°C/104°F) and cool (20°C/68°F) bars. When someone presses a hand against the grill, they experience the illusion of burning heat. But if the person presses against only a cool bar, only coolness is experienced; if the person presses against only a warm bar, only warmth is experienced.

Researchers have used the illusion to demonstrate that burning pain sensation is in fact a mixture of both cold and heat pain and that it is only the inhibition of the cold pain "channel" that reveals the heat component.

The illusion is demonstrated by positioning the middle finger in cold water and the ring and index fingers in warm water. Due to shortcomings in the body map - multisensory representation of the body - and this particular sensory input configuration, the brain is tricked into thinking the middle finger is in the warm water and the index and ring fingers in cold water.

In an fMRI experiment of the illusion, researchers recently observed an activation of the thalamus not seen for control stimuli. Also, activity in a portion of the right mid/anterior insula correlated with the perceived unpleasantness of the illusion.

🔗 Linguistics 🔗 Linguistics/Applied Linguistics

SHRDLU was an early natural language understanding computer program, developed by Terry Winograd at MIT in 1968–1970. In it, the user carries on a conversation with the computer, moving objects, naming collections and querying the state of a simplified "blocks world", essentially a virtual box filled with different blocks.

SHRDLU was written in the Micro Planner and Lisp programming language on the DEC PDP-6 computer and a DEC graphics terminal. Later additions were made at the computer graphics labs at the University of Utah, adding a full 3D rendering of SHRDLU's "world".

The name SHRDLU was derived from ETAOIN SHRDLU, the arrangement of the letter keys on a Linotype machine, arranged in descending order of usage frequency in English.

🔗 France 🔗 World Heritage Sites 🔗 Lighthouses

Cordouan lighthouse (French pronunciation: [kɔʁdwɑ̃]) is an active lighthouse located 7 kilometres (4.3 miles) at sea, near the mouth of the Gironde estuary in France. At a height of 67.5 metres (221 ft), it is the tenth-tallest "traditional lighthouse" in the world.

The Tour de Cordouan, the 'Patriarch of Lighthouses' is by far the oldest lighthouse in France, with construction starting in 1584 and finishing in 1611. Designed by leading Paris architect Louis de Foix, the lighthouse is something of a Renaissance masterpiece, drawing inspiration from Roman mausoleums, and the palaces, cathedrals, and forts of the Renaissance. Three stories were added in the 18th century.

Because of its outstanding Renaissance architecture and its testimony to the development of lighthouses, the Cordouan Lighthouse was listed as a historic monument in 1862, and recognized by UNESCO as a World Heritage Site in 2021.