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๐ PiHKAL: โPhenethylamines I Have Known and Lovedโ
PiHKAL: A Chemical Love Story is a book by Dr. Alexander Shulgin and Ann Shulgin, published in 1991. The subject of the work is psychoactive phenethylamine chemical derivatives, notably those that act as psychedelics and/or empathogen-entactogens. The main title, PiHKAL, is an acronym that stands for "Phenethylamines I Have Known and Loved".
The book is arranged into two parts, the first part being a fictionalized autobiography of the couple and the second part describing 179 different psychedelic compounds (most of which Shulgin discovered himself), including detailed synthesis instructions, bioassays, dosages, and other commentary.
The second part was made freely available by Shulgin on Erowid while the first part is available only in the printed text. While the reactions described are beyond the ability of people with a basic chemistry education, some tend to emphasize techniques that do not require difficult-to-obtain chemicals. Notable among these are the use of mercury-aluminum amalgam (an unusual but easy to obtain reagent) as a reducing agent and detailed suggestions on legal plant sources of important drug precursors such as safrole.
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- "PiHKAL: โPhenethylamines I Have Known and Lovedโ" | 2021-11-29 | 29 Upvotes 2 Comments
๐ Hinterkaifeck Murders
The Hinterkaifeck murders occurred on the evening of 31ย March 1922, when six inhabitants of a small Bavarian farmstead, located approximately 70 kilometres (43ย mi) north of Munich, Germany, were murdered by an unknown assailant. The six victims were Andreas Gruber (aged 63), his wife Cรคzilia Gruber (aged 72), their widowed daughter Viktoria Gabriel (aged 35), Viktoria's children, Cรคzilia (aged 7) and Josef (aged 2), and the maid, Maria Baumgartner (aged 44). They were all found struck dead with a mattock, also known as a "grub axe". The perpetrator(s) lived with the six corpses of their victims for three days. The murders are considered one of the most gruesome and puzzling unsolved crimes in German history.
Four of the dead bodies were found stacked up in the barn, the victims having been lured there, one by one. Prior to the incident, the family and their former maid reported hearing strange noises coming from the attic, which led to that maid leaving. The case remains unsolved to this day.
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- "Hinterkaifeck Murders" | 2023-11-04 | 24 Upvotes 2 Comments
๐ Policy laundering
Policy laundering is the disguising of the origins of political decisions, laws, or international treaties. The term is based on the similar money laundering.
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- "Policy laundering" | 2018-03-15 | 119 Upvotes 65 Comments
๐ Thunderbird and Whale
"Thunderbird and Whale" is an indigenous myth belonging to the mythological traditions of a number of tribes from the Pacific Northwest.
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- "Thunderbird and Whale" | 2023-10-11 | 69 Upvotes 15 Comments
๐ Okavango Delta
The Okavango Delta (or Okavango Grassland) (formerly spelled "Okovango" or "Okovanggo") in Botswana is a swampy inland delta formed where the Okavango River reaches a tectonic trough in the central part of the endorheic basin of the Kalahari. All the water reaching the delta is ultimately evaporated and transpired and does not flow into any sea or ocean. Each year, about 11 cubic kilometres (2.6ย cuย mi) of water spread over the 6,000โ15,000ย km2 (2,300โ5,800ย sqย mi) area. Some flood waters drain into Lake Ngami. The area was once part of Lake Makgadikgadi, an ancient lake that had mostly dried up by the early Holocene.
The Moremi Game Reserve, a National Park, is on the eastern side of the Delta. The Delta was named as one of the Seven Natural Wonders of Africa, which were officially declared on 11 February 2013 in Arusha, Tanzania. On 22 June 2014, the Okavango Delta became the 1000th site to be officially inscribed on the UNESCO World Heritage List.
๐ Fort Worth โ Now 10th largest US city
Fort Worth is a city in the U.S. state of Texas and the seat of Tarrant County, covering nearly 350 square miles (910ย km2) into Denton, Johnson, Parker, and Wise counties. Fort Worth's population was 918,915 as of the official 2020 U.S. census count, making it the 11th-most populous city in the United States. Fort Worth is the second-largest city in the DallasโFort Worth metroplex, after Dallas, and the metropolitan area is the fourth-most populous metropolitan area in the United States and the most populous in Texas.
The city of Fort Worth was established in 1849 as an army outpost on a bluff overlooking the Trinity River. Fort Worth has historically been a center of the Texas Longhorn cattle trade. It still embraces its Western heritage and traditional architecture and design. USSย Fort Worthย (LCS-3) is the first ship of the United States Navy named after the city. Nearby Dallas has held a population majority in the metropolitan area for as long as records have been kept, yet Fort Worth has become one of the fastest-growing cities in the United States.
The city is the location of the Van Cliburn International Piano Competition and several museums designed by contemporary architects. The Kimbell Art Museum was designed by Louis Kahn, with an additional designs by Renzo Piano. The Modern Art Museum of Fort Worth was designed by Tadao Ando. The Amon Carter Museum of American Art, designed by Philip Johnson, houses American art. The Sid Richardson Museum, redesigned by David M. Schwarz, has a collection of Western art in the United States emphasizing Frederic Remington and Charles Russell. The Fort Worth Museum of Science and History was designed by Ricardo Legorreta of Mexico.
In addition, the city of Fort Worth is the location of several universities including, University of Texas at Arlington, Texas Christian University, Texas Wesleyan, University of North Texas Health Science Center, and Texas A&M University School of Law. Several multinational corporations, including Bell Textron, American Airlines, and BNSF Railway, are headquartered in Fort Worth.
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- "Fort Worth โ Now 10th largest US city" | 2025-03-30 | 15 Upvotes 2 Comments
๐ Invented Tradition
Invented traditions are cultural practices that are presented or perceived as traditional, arising from the people starting in the distant past, but which in fact are relatively recent and often even consciously invented by identifiable historical actors. The concept was highlighted in the 1983 book The Invention of Tradition, edited by Eric Hobsbawm and Terence Ranger. Hobsbawm's introduction argues that many "traditions" which "appear or claim to be old are often quite recent in origin and sometimes invented." This "invention" is distinguished from "starting" or "initiating" a tradition that does not then claim to be old. The phenomenon is particularly clear in the modern development of the nation and of nationalism, creating a national identity promoting national unity, and legitimising certain institutions or cultural practices.
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- "Invented Tradition" | 2023-09-03 | 41 Upvotes 22 Comments
๐ Arcosanti
Arcosanti is a projected experimental town with a molten bronze bell casting business in Yavapai County, central Arizona, 70ย mi (110ย km) north of Phoenix, at an elevation of 3,732 feet (1,130 meters). Its arcology concept was posited by the Italian-American architect, Paolo Soleri (1919โ2013). He began construction in 1970, to demonstrate how urban conditions could be improved while minimizing the destructive impact on the earth. He taught and influenced generations of architects and urban designers who studied and worked with him there to build the proposed "town".
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- "Arcosanti" | 2020-08-05 | 230 Upvotes 71 Comments
- "Arcosanti" | 2015-02-19 | 113 Upvotes 28 Comments
๐ The knowledge argument
The knowledge argument (also known as Mary's room or Mary the super-scientist) is a philosophical thought experiment proposed by Frank Jackson in his article "Epiphenomenal Qualia" (1982) and extended in "What Mary Didn't Know" (1986). The experiment is intended to argue against physicalismโthe view that the universe, including all that is mental, is entirely physical. The debate that emerged following its publication became the subject of an edited volumeโThere's Something About Mary (2004)โwhich includes replies from such philosophers as Daniel Dennett, David Lewis, and Paul Churchland.
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- "The knowledge argument" | 2015-03-19 | 31 Upvotes 54 Comments
๐ Harvard Mark I
The IBM Automatic Sequence Controlled Calculator (ASCC), called Mark I by Harvard Universityโs staff, was a general purpose electromechanical computer that was used in the war effort during the last part of World War II.
One of the first programs to run on the Mark I was initiated on 29 March 1944 by John von Neumann. At that time, von Neumann was working on the Manhattan Project, and needed to determine whether implosion was a viable choice to detonate the atomic bomb that would be used a year later. The Mark I also computed and printed mathematical tables, which had been the initial goal of British inventor Charles Babbage for his "analytical engine".
The Mark I was disassembled in 1959, but portions of it are displayed in the Science Center as part of the Harvard Collection of Historical Scientific Instruments. Other sections of the original machine were transferred to IBM and the Smithsonian Institution.
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- "Harvard Mark I" | 2019-08-07 | 44 Upvotes 23 Comments