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๐ 2000-Watt Society
The 2000-watt society is an environmental vision, first introduced in 1998 by the Swiss Federal Institute of Technology in Zรผrich (ETH Zurich), which pictures the average First World citizen reducing their overall average primary energy usage rate to no more than 2,000 watts (i.e. 2 kWh per hour or 48 kWh per day) by the year 2050, without lowering their standard of living.
The concept addresses not only personal or household energy use, but the total for the whole society, including embodied energy, divided by the population.
Two thousand watts is approximately the current world average rate of total primary energy use. This compared, in 2008, to averages of around 6,000 watts in western Europe, 12,000 watts in the United States, 1,500 watts in China, 1,000 watts in India, 500 watts in South Africa and only 300 watts in Bangladesh. Switzerland itself, then using an average of around 5,000 watts, was last a 2000-watt society in the 1960s.
It is further envisaged that the use of carbon-based fuels would be ultimately cut to no more than 500 watts per person within 50 to 100 years.
The vision was developed in response to concerns about climate change, energy security, and the future availability of energy supplies. It is supported by the Swiss Federal Office of Energy, the Association of Swiss Architects and Engineers, and other bodies.
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- "2000-Watt Society" | 2022-09-19 | 194 Upvotes 296 Comments
๐ The Last Question
"The Last Question" is a science fiction short story by American writer Isaac Asimov. It first appeared in the November 1956 issue of Science Fiction Quarterly and was anthologized in the collections Nine Tomorrows (1959), The Best of Isaac Asimov (1973), Robot Dreams (1986), The Best Science Fiction of Isaac Asimov (1986), the retrospective Opus 100 (1969), and in Isaac Asimov: The Complete Stories, Vol. 1 (1990). While he also considered it one of his best works, โThe Last Questionโ was Asimov's favorite short story of his own authorship, and is one of a loosely connected series of stories concerning a fictional computer called Multivac. Asimov's Three Laws of Robotics, which were first formulated in 1940, outline the criteria for robotic existence in relation to humans. Humanity's relationship to Multivac is questioned on the subject of entropy. The story overlaps science fiction, theology, and philosophy. ย
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- "The Last Question" | 2022-06-08 | 314 Upvotes 164 Comments
๐ A list of April Fools' Day RFCs
A Request for Comments (RFC), in the context of Internet governance, is a type of publication from the Internet Engineering Task Force (IETF) and the Internet Society (ISOC), usually describing methods, behaviors, research, or innovations applicable to the working of the Internet and Internet-connected systems.
Almost every April Fools' Day (1 April) since 1989, the Internet RFC Editor has published one or more humorous Request for Comments (RFC) documents, following in the path blazed by the June 1973 RFC 527 called ARPAWOCKY, a parody of Lewis Carroll's nonsense poem "Jabberwocky". The following list also includes humorous RFCs published on other dates.
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- "April Fools Day Request for Comments" | 2024-04-01 | 16 Upvotes 2 Comments
- "UTF-9 and UTF-18" | 2015-02-05 | 109 Upvotes 11 Comments
- "A list of April Fools' Day RFCs" | 2010-03-31 | 17 Upvotes 2 Comments
๐ Jerry Pournelle has died
Jerry Eugene Pournelle (; August 7, 1933 โ September 8, 2017) was an American polymath: scientist in the area of operations research and human factors research, science fiction writer, essayist, journalist, and one of the first bloggers. In the 1960s and early 1970s, he worked in the aerospace industry, but eventually focused on his writing career. In an obituary in gizmodo, he is described as "a tireless ambassador for the future."
Pournelle is particularly known for writing hard science fiction, and received multiple awards for his writing. In addition to his solo writing, he wrote several novels with collaborators, most notably Larry Niven. Pournelle served a term as President of the Science Fiction and Fantasy Writers of America.
Pournelle's journalism focused primarily on the computer industry, astronomy, and space exploration. From the 1970s until the early 1990s, he contributed to the computer magazine Byte, writing from the viewpoint of an intelligent user, with the oft-cited credo, โWe do this stuff so you wonโt have to.โ He created one of the first blogs, entitled "Chaos Manor", which included commentary about politics, computer technology, space technology, and science fiction.
Pournelle was also known for his paleoconservative political views, which were sometimes expressed in his fiction. He was one of the founders of the Citizens' Advisory Council on National Space Policy, which developed some of the Reagan Administration's space initiatives, including the earliest versions of what would become the Strategic Defense Initiative.
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- "Jerry Pournelle has died" | 2017-09-08 | 322 Upvotes 148 Comments
๐ Twike
The Twike (a portmanteau of the words twin and bike) is a human-electric hybrid vehicle (HEHV) designed to carry two passengers and cargo. Essentially a velomobile with an electrical hybrid engine, it can be driven in electric-only mode or electric + pedal power mode. Pedaling warms the user, making electric heating in winter unnecessary, extends the range of the vehicle but does not substantially add to the vehicle's top speed.
Constructed of lightweight materials such as aluminium (frame) and plastic (shell), the 246ย kg (542ย lb) (unladen, varying with battery weight) tricycle vehicle first used NiCd batteries, later Li-Mn, LiFePO4 and LiIon. Typically ranges reach from 50 to over 500ย km depending on battery size, type, status on one side and speed and altitude profile and load on the other. Energy is reclaimed while driving through regenerative braking, and load is removed from the electric system by use of the pedalling system which transfers its input directly to the drivetrain (i.e., both systems operate in parallel, not in series).
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- "Twike" | 2021-07-21 | 275 Upvotes 195 Comments
๐ Liquid Breathing
Liquid breathing is a form of respiration in which a normally air-breathing organism breathes an oxygen-rich liquid (such as a perfluorocarbon), rather than breathing air.
This requires certain physical properties such as respiratory gas solubility, density, viscosity, vapor pressure, and lipid solubility which some, but not all, perfluorochemicals (perfluorocarbon) have. Thus, it is critical to choose the appropriate PFC for a specific biomedical application, such as liquid ventilation, drug delivery or blood substitutes. The physical properties of PFC liquids vary substantially; however, the one common property is their high solubility for respiratory gases. In fact, these liquids carry more oxygen and carbon dioxide than blood.
In theory, liquid breathing could assist in the treatment of patients with severe pulmonary or cardiac trauma, especially in pediatric cases. Liquid breathing has also been proposed for use in deep diving and space travel. Despite some recent advances in liquid ventilation, a standard mode of application has not yet been established.
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- "Liquid Breathing" | 2021-04-08 | 19 Upvotes 3 Comments
- "Liquid Breathing" | 2015-06-22 | 12 Upvotes 19 Comments
- "Liquid breathing" | 2010-12-20 | 37 Upvotes 5 Comments
- "Liquid breathing" | 2009-09-28 | 18 Upvotes 4 Comments
๐ 2020 Stock Market Crash
The 2020 stock market crash is a global stock market crash that began on 20 February, 2020. On 12 February, the Dow Jones Industrial Average, the NASDAQ Composite, and S&P 500 Index all finished at record highs (while the NASDAQ and S&P 500 reached subsequent record highs on 19 February). From 24 to 28 February, stock markets worldwide reported their largest one-week declines since the 2008 financial crisis, thus entering a correction. Global markets into early March became extremely volatile, with large swings occurring in global markets. On 9ย March, most global markets reported severe contractions, mainly in response to the 2019โ20 coronavirus pandemic and an oil price war between Russia and the OPEC countries led by Saudi Arabia. This became colloquially known as Black Monday I, and at the time was the worst drop since the Great Recession in 2008.
Three days after Black Monday I there was another drop, Black Thursday, where stocks across Europe and North America fell more than 9%. Wall Street experienced its largest single-day percentage drop since Black Monday in 1987, and the FTSE MIB of the Borsa Italiana fell nearly 17%, becoming the worst-hit market during Black Thursday. Despite a temporary rally on 13ย March (with markets posting their best day since 2008), all three Wall Street indexes fell more than 12% when markets re-opened on 16ย March. At least one benchmark stock market index in all G7 countries and 14 of the G20 countries have been declared to be in bear markets.
As of March 2020, global stocks have seen a downturn of at least 25% during the crash, and 30% in most G20 nations. Goldman Sachs has warned that the US GDP will shrink 29% by the end of the 2nd quarter of 2020, and that unemployment may skyrocket to at least 9%. Australian Prime Minister Scott Morrison has called the looming economic crisis 'akin to the Great Depression'.
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- "2020 Stock Market Crash" | 2020-03-16 | 264 Upvotes 199 Comments
๐ Pizza Effect
In religious studies and sociology, the pizza effect is the phenomenon of elements of a nation or people's culture being transformed or at least more fully embraced elsewhere, then re-imported back to their culture of origin, or the way in which a community's self-understanding is influenced by (or imposed by, or imported from) foreign sources. It is named after the idea that modern pizza toppings were developed among Italian immigrants in the United States (rather than in native Italy, where in its simpler form it was originally looked down upon), and was later exported back to Italy to be interpreted as a delicacy in Italian cuisine.
Related phrases include "hermeneutical feedback loop", "re-enculturation", and "self-orientalization". The term "pizza effect" was coined by the Austrian-born Hindu monk and professor of Anthropology at Syracuse University, Agehananda Bharati in 1970.
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- "Pizza Effect" | 2020-03-02 | 237 Upvotes 223 Comments
๐ Doorway Effect
The 'doorway effect' or โlocation updating effectโ is a replicable psychological phenomenon characterized by short-term memory loss when passing through a doorway or moving from one location to another. We tend to forget items of recent significance immediately after crossing a boundary and often forget what we were thinking about or planning on doing upon entering a different room. Research suggests that this phenomenon occurs both at literal boundaries (e.g., moving from one room to another via a door) and metaphorical boundaries (e.g., imagining traversing a doorway, or even when moving from one desktop window to another on a computer).
Memory is organized around specific events or episodes, such as attending a lecture or having a family meal, rather than being a continuous stream interrupted by sleep. This organization is called episodic memory, which involves receiving and storing information about events that are temporarily dated, along with their time and place relationships.
Numerous psychological studies have indicated that the external context, including the location where events occur, plays a significant role in how memories are separated. This context helps establish distinctions between different remembered events. Memories of events that happen in the environment we're currently in are easier to access compared to those from different places. As a result, when we experience spatial changes and move to a different location, it can act as a boundary marker that separates and categorizes our continuous flow of memories into distinct segments.
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- "Doorway Effect" | 2024-02-08 | 313 Upvotes 146 Comments
๐ Wabi-sabi
In traditional Japanese aesthetics, wabi-sabi (ไพๅฏ) is a world view centered on the acceptance of transience and imperfection. The aesthetic is sometimes described as one of beauty that is "imperfect, impermanent, and incomplete". It is a concept derived from the Buddhist teaching of the three marks of existence (ไธๆณๅฐ, sanbลin), specifically impermanence (็กๅธธ, mujล), suffering (่ฆ, ku) and emptiness or absence of self-nature (็ฉบ, kลซ).
Characteristics of the wabi-sabi aesthetic include asymmetry, roughness, simplicity, economy, austerity, modesty, intimacy, and appreciation of the ingenuous integrity of natural objects and processes.
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- "Wabi-Sabi" | 2023-07-23 | 26 Upvotes 8 Comments
- "Wabi-Sabi" | 2021-10-11 | 19 Upvotes 3 Comments
- "Wabi-sabi" | 2013-10-16 | 63 Upvotes 33 Comments