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π Piyama-Radu
Piyamaradu (also spelled Piyama-Radu, Piyama Radu, Piyamaradus, PiyamaraduΕ‘) was a warlike personage whose name figures prominently in the Hittite archives of the middle and late 13th century BC in western Anatolia. His history is of particular interest because it appears to intertwine with that of the Trojan War. Some scholars assume that his name is cognate to that of King Priam of Troy.
π Soviet version of the Space Shuttle
Buran (Russian: ΠΡΡΠ°ΜΠ½, IPA:Β [bΚΛran], meaning "Snowstorm" or "Blizzard"; GRAU index serial number: "11F35 K1") was the first spaceplane to be produced as part of the Soviet/Russian Buran programme. It is, depending on the source, also known as "OK-1K1", "Orbiter K1", "OK 1.01" or "Shuttle 1.01". Besides describing the first operational Soviet/Russian shuttle orbiter, "Buran" was also the designation for the entire Soviet/Russian spaceplane project and its orbiters, which were known as "Buran-class spaceplanes".
OK-1K1 completed one uncrewed spaceflight in 1988, and was destroyed in 2002 when the hangar it was stored in collapsed. The Buran-class orbiters used the expendable Energia rocket, a class of super heavy-lift launch vehicle.
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- "Soviet version of the Space Shuttle" | 2011-01-27 | 33 Upvotes 28 Comments
π Self-tiling tile set
A self-tiling tile set, or setiset, of order n is a set of n shapes or pieces, usually planar, each of which can be tiled with smaller replicas of the complete set of n shapes. That is, the n shapes can be assembled in n different ways so as to create larger copies of themselves, where the increase in scale is the same in each case. Figure 1 shows an example for n = 4 using distinctly shaped decominoes. The concept can be extended to include pieces of higher dimension. The name setisets was coined by Lee Sallows in 2012, but the problem of finding such sets for n = 4 was asked decades previously by C. Dudley Langford, and examples for polyaboloes (discovered by Martin Gardner, Wade E. Philpott and others) and polyominoes (discovered by Maurice J. Povah) were previously published by Gardner.
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- "Self-tiling tile set" | 2015-10-14 | 139 Upvotes 21 Comments
π Idiocracy
Idiocracy is a 2006 American science fiction comedy film co-produced and directed by Mike Judge from a screenplay written by Judge and Etan Cohen based on a story written by Judge. The plot follows United States Army librarian Joe Bauers and prostitute Rita, who undergo a government hibernation experiment. Joe and Rita awake five hundred years later in a dystopian anti-intellectual society. The cast includes Luke Wilson, Maya Rudolph, Dax Shepard, Terry Crews, David Herman, Justin Long, Andrew Wilson, and Brad Jordan.
The concept of Idiocracy dates back to a concept Judge envisioned in 1996. Judge finished a script with the working title 3001 in 2001, rewriting the film a year later. Filming took place throughout 2004 at Austin Studios and other cities in Texas. Idiocracy serves as a social satire that touches on issues including anti-intellectualism, commercialism, consumerism, dysgenics, voluntary childlessness, and overpopulation. 20th Century Fox was hesitant to promote the film, refusing to grant it a wide release, and did not screen the film for critics. The decision not to market Idiocracy was seen as unexpected, following the success of Office Space (1999), and led to speculation. According to Crews, the film's satirical depiction of corporations made the film financially unviable, while Judge attributed 20th Century Fox's decision to negative test screenings; Judge stated that 20th Century Fox believed that the film would develop a cult following through its DVD release, similar to Office Space.
The film was released in the United States on September 1, 2006. Despite its lack of a major theatrical release, which resulted in a $495,000 gross at the box office, the film received positive reviews from critics and has since become a cult film.
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- "Idiocracy" | 2025-05-24 | 87 Upvotes 25 Comments
π Karelian Question
The Karelian question or Karelian issue (Finnish: Karjala-kysymys, Swedish: Karelska frΓ₯gan) is a dispute in Finnish politics over whether to try to regain control over eastern Finnish Karelia and other territories ceded to the Soviet Union in the Winter War and the Continuation War. Despite the name "Karelian question", the term may refer also to the return of Petsamo, ceded parts of Salla and Kuusamo, and four islands in the Gulf of Finland. Sometimes the phrase "debate on the return of the ceded territories" (luovutettujen alueiden palautuskeskustelu, Swedish: debatten om tillbakalΓ€mningen av de avtrΓ€dda territorierna) is used. The Karelian question remains a matter of public debate rather than a political issue.
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- "Karelian Question" | 2022-09-21 | 13 Upvotes 8 Comments
π Russian cosmism
Russian cosmism is a philosophical and cultural movement that emerged in Russia in the turn of the 19th and 20th centuries.
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- "Russian cosmism" | 2015-01-01 | 15 Upvotes 3 Comments
π Against Method
Against Method: Outline of an Anarchistic Theory of Knowledge is a 1975 book about the philosophy of science by Paul Feyerabend, in which the author argues that science is an anarchic enterprise, not a nomic (customary) one. In the context of this work, the term anarchy refers to epistemological anarchy.
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- "Against Method" | 2022-12-22 | 134 Upvotes 64 Comments
- "Against Method" | 2015-09-27 | 133 Upvotes 59 Comments
π Happy Diwali Everyone
Diwali (English: ), Deepavali, or Divali, (IAST: dΔ«pΔvalΔ«) also known as the Festival of Lights is a Hindu religious festival and one of the most important festivals within Hinduism. It generally lasts five days (or six in some regions of India), and is celebrated during the Hindu lunisolar month Kartika (between mid-October and mid-November). One of the most popular festivals of Hinduism, it symbolizes the spiritual "victory of light over darkness, good over evil, and knowledge over ignorance". The festival is widely associated with Lakshmi, goddess of prosperity and Ganesha, god of wisdom and the remover of obstacles, with many other regional traditions connecting the holiday to Sita and Rama, Vishnu, Krishna, Durga, Shiva, Kali, Hanuman, Kubera, Yama, Yami, Dhanvantari, or Vishvakarman. Furthermore, it is a celebration of the day Rama returned to his kingdom in Ayodhya with his wife Sita and his brother Lakshmana after defeating the demon Ravana in Lanka and serving 14 years of exile.
In the lead-up to Deepavali, celebrants prepare by cleaning, renovating, and decorating their homes and workplaces with diyas (oil lamps) and rangolis (colorful art circle patterns). During Diwali, people wear their finest clothes, illuminate the interior and exterior of their homes with diyas and rangoli, perform worship ceremonies of Lakshmi, the goddess of prosperity and wealth, light fireworks, and partake in family feasts, where mithai (sweets) and gifts are shared. Originally a Hindu festival, Diwali has transcended religious lines and is also celebrated by Jains and Sikhs. It is a major cultural event for the Hindu, Sikh, and Jain diaspora.
The five-day long festival originated in the Indian subcontinent and is mentioned in early Sanskrit texts. Diwali is usually celebrated twenty days after the Vijayadashami (Dussehra, Dasara, Dashain, Dashahara) festival, with Dhanteras, or the regional equivalent, marking the first day of the festival when celebrants prepare by cleaning their homes and making decorations on the floor, such as rangolis.Some regions of India start Diwali festivities the day before Dhanteras with Govatsa Dwadashi. The second day is Naraka Chaturdashi. The third day is the day of Lakshmi Puja and the darkest night of the traditional month. In some parts of India, the day after Lakshmi Puja is marked with the Govardhan Puja and Balipratipada (Padwa). Some Hindu communities mark the last day as Bhai Dooj or the regional equivalent, which is dedicated to the bond between sister and brother, while other Hindu and Sikh craftsmen communities mark this day as Vishwakarma Puja and observe it by performing maintenance in their work spaces and offering prayers.
Some other faiths in India also celebrate their respective festivals alongside Diwali. The Jains observe their own Diwali which marks the final liberation of Mahavira, the Sikhs celebrate Bandi Chhor Divas to mark the release of Guru Hargobind from a Mughal prison, while Newar Buddhists, unlike other Buddhists, celebrate Diwali by worshipping Lakshmi, while the Hindus of Eastern India and Bangladesh generally celebrate Diwali by worshipping the goddess Kali. The main day of the festival of Diwali (the day of Lakshmi Puja) is an official holiday in Fiji, Guyana, India, Malaysia, Mauritius, Myanmar, Nepal, Pakistan, Singapore, Sri Lanka, Suriname, and Trinidad and Tobago.
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- "Happy Diwali Everyone" | 2022-10-24 | 126 Upvotes 34 Comments
π GΓΆdel's Loophole
GΓΆdel's Loophole is a "inner contradiction" in the Constitution of the United States which Austrian-German-American logician, mathematician, and analytic philosopher Kurt GΓΆdel claimed to have discovered in 1947. The flaw would have allowed the American democracy to be legally turned into a dictatorship. GΓΆdel told his friend Oskar Morgenstern about the existence of the flaw and Morgenstern told Albert Einstein about it at the time, but Morgenstern, in his recollection of the incident in 1971, never mentioned the exact problem as GΓΆdel saw it. This has led to speculation about the precise nature of what has come to be called "GΓΆdel's Loophole". It has been called "one of the great unsolved problems of constitutional law."
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- "GΓΆdel's Loophole" | 2025-08-06 | 21 Upvotes 11 Comments
- "GΓΆdel's Loophole" | 2023-07-24 | 21 Upvotes 4 Comments
- "GΓΆdel's Loophole" | 2023-04-05 | 12 Upvotes 2 Comments
- "GΓΆdel's Loophole" | 2023-01-20 | 10 Upvotes 1 Comments
- "GΓΆdel's Loophole" | 2021-03-25 | 131 Upvotes 130 Comments
π The Theory of Interstellar Trade, Paul Krugman (1978)
The Theory of Interstellar Trade is a paper written in 1978 by the economist Paul Krugman. The paper was first published in March 2010 in the journal Economic Inquiry. He described the paper as something he wrote to cheer himself up when he was an "oppressed assistant professor" caught up in the academic rat race.
Krugman analyzed the question of
How should interest rates on goods in transit be computed when the goods travel at close to the speed of light? This is a problem because the time taken in transit will appear less to an observer traveling with the goods than to a stationary observer.
Krugman emphasized that in spite of its farcical subject matter, the economic analysis in the paper is correctly done. In his own words,
while the subject of this paper is silly, the analysis actually does make sense. This paper, then, is a serious analysis of a ridiculous subject, which is of course the opposite of what is usual in economics.
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- "The Theory of Interstellar Trade, Paul Krugman (1978)" | 2009-09-12 | 21 Upvotes 6 Comments