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π Chicago Tunnel and Reservoir Plan
The Tunnel and Reservoir Plan (abbreviated TARP and more commonly known as the Deep Tunnel Project or the Chicago Deep Tunnel) is a large civil engineering project that aims to reduce flooding in the metropolitan Chicago area, and to reduce the harmful effects of flushing raw sewage into Lake Michigan by diverting storm water and sewage into temporary holding reservoirs. The megaproject is one of the largest civil engineering projects ever undertaken in terms of scope, cost and timeframe. Commissioned in the mid-1970s, the project is managed by the Metropolitan Water Reclamation District of Greater Chicago. Completion of the system is not anticipated until 2029, but substantial portions of the system have already opened and are currently operational. Across 30 years of construction, over $3 billion has been spent on the project.
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- "Chicago Tunnel and Reservoir Plan" | 2015-12-04 | 14 Upvotes 5 Comments
π Problem of Time
In theoretical physics, the problem of time is a conceptual conflict between general relativity and quantum mechanics in that quantum mechanics regards the flow of time as universal and absolute, whereas general relativity regards the flow of time as malleable and relative. This problem raises the question of what time really is in a physical sense and whether it is truly a real, distinct phenomenon. It also involves the related question of why time seems to flow in a single direction, despite the fact that no known physical laws seem to require a single direction.
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- "Problem of Time" | 2020-04-05 | 63 Upvotes 49 Comments
π The Nature of the Firm (1937)
"The Nature of the Firm" (1937) is an article by Ronald Coase. It offered an economic explanation of why individuals choose to form partnerships, companies and other business entities rather than trading bilaterally through contracts on a market. The author was awarded the Nobel Memorial Prize in Economic Sciences in 1991 in part due to this paper. Despite the honor, the paper was written when Coase was an undergraduate and he described it later in life as "little more than an undergraduate essay."
The article argues that firms emerge because they are better equipped to deal with the transaction costs inherent in production and exchange than individuals are. Economists such as Oliver Williamson, Douglass North, Oliver Hart, Bengt HolmstrΓΆm, Arman Alchian and Harold Demsetz expanded on Coase's work on firms, transaction costs and contracts. Economists and political scientists have used insights from Coase's work to explain the functioning of organizations in general, not just firms. Coase's work strongly influenced the New Economics of Organization (New Institutional Economics).
Coase's article distinguished between markets as a coordination mechanism and firms as a coordination mechanism.
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- "The Nature of the Firm (1937)" | 2022-05-13 | 132 Upvotes 56 Comments
π Hundredth monkey effect
The hundredth monkey effect is a hypothetical phenomenon in which a new behaviour or idea is said to spread rapidly by unexplained means from one group to all related groups once a critical number of members of one group exhibit the new behaviour or acknowledge the new idea.
One of the primary factors in the promulgation of the story is that many authors quote secondary, tertiary or post-tertiary sources which have themselves misrepresented the original observations.
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- "Hundredth monkey effect" | 2012-12-24 | 11 Upvotes 6 Comments
π You Will
"You Will" was an AT&T marketing campaign that launched in 1993, consisting of commercials directed by David Fincher. Each ad presented a futuristic scenario beginning with "Have you everβ¦" and ending with "β¦you will. And the company that will bring it to you: AT&T."
The ads were narrated by Tom Selleck.
The creative team that created the ad campaign at N.W. Ayer & Partners were Copy Supervisor Gordon Hasse, Art Supervisor Nick Scordato and Producer Gaston Braun.
One of the first web banner ads ever sold was part of an AT&T campaign that ran on HotWired starting October 27, 1994, asking "Have you ever clicked your mouse right HERE? You Will".
In 2016, technology writer Timothy B. Lee commented that "overall, the ads were remarkably accurate in predicting the cutting-edge technologies of the coming decades. But the ads were mostly wrong about one thing: the company that brought these technologies to the world was not AT&T. At least not on its own. AT&T does provide some of the infrastructure on which the world's communications flow. But the gadgets and software that brought these futuristic capabilities to consumers were created by a new generation of Silicon Valley companies that mostly didn't exist when these ads were made."
The ads won a few different awards at the time, notably the first annual David Ogilvy Award for the most effective campaign supported by research, the 1994 PCIA (Personal Communications Industry Award), and two ADDY Awards.
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- "You Will" | 2025-06-04 | 20 Upvotes 6 Comments
π Biosphere 2
Biosphere 2 is an American Earth system science research facility located in Oracle, Arizona. Its mission is to serve as a center for research, outreach, teaching, and lifelong learning about Earth, its living systems, and its place in the universe. It is a 3.14-acre (1.27-hectare) structure originally built to be an artificial, materially closed ecological system, or vivarium. It remains the largest closed ecological system ever created.
Constructed between 1987 and 1991, Biosphere 2 was originally meant to demonstrate the viability of closed ecological systems to support and maintain human life in outer space as a substitute for Earth's biosphere. It was designed to explore the web of interactions within life systems in a structure with different areas based on various biological biomes. In addition to the several biomes and living quarters for people, there was an agricultural area and work space to study the interactions between humans, farming, technology and the rest of nature as a new kind of laboratory for the study of the global ecology. Its mission was a two-year closure experiment with a crew of eight humans ("biospherians"). Long-term it was seen as a precursor to gaining knowledge about the use of closed biospheres in space colonization. As an experimental ecological facility it allowed the study and manipulation of a mini biospheric system without harming Earth's biosphere.
Its seven biome areas were a 1,900-square-meter (20,000Β sqΒ ft) rainforest, an 850-square-meter (9,100Β sqΒ ft) ocean with a coral reef, a 450-square-meter (4,800Β sqΒ ft) mangrove wetlands, a 1,300-square-metre (14,000Β sqΒ ft) savannah grassland, a 1,400-square-meter (15,000Β sqΒ ft) fog desert, and two anthropogenic biomes: a 2,500-square-meter (27,000Β sqΒ ft) agricultural system and a human habitat with living spaces, laboratories and workshops. Below ground was an extensive part of the technical infrastructure. Heating and cooling water circulated through independent piping systems and passive solar input through the glass space frame panels covering most of the facility, and electrical power was supplied into Biosphere 2 from an onsite natural gas energy center.
Biosphere 2 was only used twice for its original intended purposes as a closed-system experiment: once from 1991 to 1993, and the second time from March to September 1994. Both attempts ran into problems including low amounts of food and oxygen, die-offs of many animals and plants included in the experiment (though this was anticipated since the project used a strategy of deliberately "species-packing" anticipating losses as the biomes developed), group dynamic tensions among the resident crew, outside politics, and a power struggle over management and direction of the project. Nevertheless, the closure experiments set world records in closed ecological systems, agricultural production, health improvements with the high nutrient and low caloric diet the crew followed, and insights into the self-organization of complex biomic systems and atmospheric dynamics. The second closure experiment achieved total food sufficiency and did not require injection of oxygen.
In June 1994, during the middle of the second experiment, the managing company, Space Biosphere Ventures, was dissolved, and the facility was left in limbo. Columbia University assumed management of the facility in 1995 and used it to run experiments until 2003. It then appeared to be in danger of being demolished to make way for housing and retail stores, but was taken over for research by the University of Arizona in 2007. The University of Arizona took full ownership of the structure in 2011.
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- "Biosphere 2" | 2023-05-26 | 100 Upvotes 50 Comments
π Utau β a Japanese singing synthesizer application
UTAU is a Japanese singing synthesizer application created by Ameya/Ayame. This program is similar to the VOCALOID software, with the difference being it is shareware instead of under a third party licensing.
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- "Utau β a Japanese singing synthesizer application" | 2014-06-10 | 63 Upvotes 37 Comments
π Advogato
Advogato was an online community and social networking site dedicated to free software development and created by Raph Levien. In 2007, Steve Rainwater took over maintenance and new development from Raph. In 2016, Rainwater's running instance was shut down and backed up to archive.org.
π SDF Public Access Unix System
Super Dimension Fortress (SDF, also known as freeshell.org) is a non-profit public access UNIX shell provider on the Internet. It has been in continual operation since 1987 as a non-profit social club. The name is derived from the Japanese anime series The Super Dimension Fortress Macross; the original SDF server was a BBS for anime fans. From its BBS roots, which have been well documented as part of the BBS: The Documentary project, SDF has grown into a feature-rich provider serving members around the world.
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- "SDF Public Access Unix System" | 2017-08-06 | 94 Upvotes 29 Comments
π Redesigning Wikipedia: The Athena Project
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- "Redesigning Wikipedia: The Athena Project" | 2012-08-13 | 119 Upvotes 26 Comments