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π Printer's key
The printerβs key, also known as the number line, is a line of text printed on the copyright page (often the verso of the title page, especially in English-language publishing) of books, used to indicate the print run. Publishers began this convention about the middle of the 20th century.
An example follows:
This is how the printer's key will appear in the first print run of a book. Numbers are removed with subsequent printings, so if "1" is seen then the book is the first printing of that edition. If it is the second printing then the "1" is removed, meaning that the lowest number seen will be "2".
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- "Printer's key" | 2015-08-06 | 66 Upvotes 15 Comments
π Toki Pona β An attempt to understand the meaning of life in 120 words
Toki Pona is a philosophical artistic constructed language known for its small vocabulary. It was created by Canadian linguist and translator Sonja Lang for the purpose of simplifying thoughts and communication. It was first published online in 2001 as a draft, and later in complete form in the book Toki Pona: The Language of Good in 2014. A small community of speakers developed in the early 2000s. The community grew after the release of the official book and has continued to grow larger since its publication. While activity mostly takes place online in chat rooms, on social media, and in other groups, there were a few organized in-person meetings during the 2010s.
The underlying feature of Toki Pona is minimalism. It focuses on simple universal concepts, making use of very little to express the most. The language is isolating and has 120β125 root words and 14 phonemes that are easy to pronounce across different languages. However, it was not created to be an international auxiliary language. Inspired by Taoist philosophy, the language is designed to help users concentrate on basic things and to promote positive thinking, in accordance with the SapirβWhorf hypothesis. Despite the small vocabulary, speakers are able to understand and communicate with each other, mainly relying on context and combinations of several words to express more specific meanings.
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- "Toki Pona β An attempt to understand the meaning of life in 120 words" | 2020-06-03 | 89 Upvotes 38 Comments
π Project Cybersyn (1971)
Project Cybersyn was a Chilean project from 1971β1973 during the presidency of Salvador Allende aimed at constructing a distributed decision support system to aid in the management of the national economy. The project consisted of four modules: an economic simulator, custom software to check factory performance, an operations room, and a national network of telex machines that were linked to one mainframe computer.
Project Cybersyn was based on viable system model theory approach to organizational design, and featured innovative technology for its time: it included a network of telex machines (Cybernet) in state-run enterprises that would transmit and receive information with the government in Santiago. Information from the field would be fed into statistical modeling software (Cyberstride) that would monitor production indicators, such as raw material supplies or high rates of worker absenteeism, in "almost" real time, alerting the workers in the first case and, in abnormal situations, if those parameters fell outside acceptable ranges by a very large degree, also the central government. The information would also be input into economic simulation software (CHECO, for CHilean ECOnomic simulator) that the government could use to forecast the possible outcome of economic decisions. Finally, a sophisticated operations room (Opsroom) would provide a space where managers could see relevant economic data, formulate feasible responses to emergencies, and transmit advice and directives to enterprises and factories in alarm situations by using the telex network.
The principal architect of the system was British operations research scientist Stafford Beer, and the system embodied his notions of organisational cybernetics in industrial management. One of its main objectives was to devolve decision-making power within industrial enterprises to their workforce in order to develop self-regulation of factories.
Discussed on
- "Project Cybersyn" | 2020-10-13 | 212 Upvotes 114 Comments
- "Project Cybersyn (1971)" | 2014-03-14 | 70 Upvotes 36 Comments
- "Computer-controlled socialist economy gets destroyed on 9/11... 1973" | 2011-09-29 | 12 Upvotes 8 Comments
- "Project Cybersyn" | 2010-08-27 | 12 Upvotes 3 Comments
- "Project Cybersyn: real-time computer control of a planned economy (1970-1973)" | 2010-03-14 | 56 Upvotes 33 Comments
π Siddhartha
Siddhartha: An Indian novel (German: Siddhartha: Eine Indische Dichtung; German: [ziΛdaΚta] ) is a 1922 novel by Hermann Hesse that deals with the spiritual journey of self-discovery of a man named Siddhartha during the time of the Gautama Buddha. The book, Hesse's ninth novel, was written in German, in a simple, lyrical style. It was published in the United States in 1951 by New Directions Publishing and became influential during the 1960s. Hesse dedicated the first part of it to the French writer Romain Rolland and the second part to Wilhelm Gundert, his cousin.
The word Siddhartha is made up of two words in the Sanskrit language: siddha (achieved) + artha (what was searched for), which together means "he who has found meaning (of existence)" or "he who has attained his goals". In fact, the Buddha's own name, before his renunciation, was Siddhartha Gautama, prince of Kapilavastu. In this book, the Buddha is referred to as "Gotama".
Discussed on
- "Siddhartha" | 2025-02-20 | 50 Upvotes 40 Comments
π Kappa Beta Phi
Kappa Beta Phi (ΞΞΞ¦) is a secret society with at least one surviving chapter, based on Wall Street in New York City, that is made up of high-ranking financial executives. The purpose of the organization today is largely social and honorific. The current honor society meets once a year at a black-tie dinner to induct new members.
Discussed on
- "Kappa Beta Phi" | 2024-03-01 | 12 Upvotes 4 Comments
π Breaking a Monopoly
Herbert Henry Dow (February 26, 1866 β October 15, 1930) was a Canadian-born American chemical industrialist, best known as the founder of the American multinational conglomerate Dow Chemical. He was a graduate of Case School of Applied Science in Cleveland, Ohio. He was a prolific inventor of chemical processes, compounds, and products, and was a successful businessman.
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- "Breaking a Monopoly" | 2020-05-07 | 54 Upvotes 4 Comments
π SpΓ₯raKoff
SpΓ₯raKoff is a HM V type tram converted into a mobile bar in Helsinki, Finland. Known as the pub tram, the vehicle does circular tours of downtown Helsinki picking up passengers for a fee during summer months. It is operated jointly by Sinebrychoff, HOK-Elanto (part of the S Group), and Helsinki City Transport.
The pub tram is immediately distinguishable in the Helsinki traffic by its vivid red colour (as opposed to the normal colours, green and cream, used on the Helsinki tram network of the Helsinki City Transport), and by the destination board that reads "PUB".
It is one of the four HM V trams that remain operational in Helsinki. Two of them are museum trams, and one is used as a non-passenger carrying advertisement tram.
Discussed on
- "SpΓ₯raKoff" | 2023-07-23 | 28 Upvotes 4 Comments
π Spaceship Earth
Spaceship Earth (or Spacecraft Earth or Spaceship Planet Earth) is a worldview encouraging everyone on Earth to act as a harmonious crew working toward the greater good.
Discussed on
- "Spaceship Earth" | 2021-03-14 | 127 Upvotes 95 Comments
- "Spaceship Earth" | 2020-08-23 | 11 Upvotes 3 Comments
π Van Eck Phreaking
Van Eck phreaking (also known as Van Eck Radiation) is a form of eavesdropping in which special equipment is used to pick up side-band electromagnetic emissions from electronic devices that correlate to hidden signals or data for the purpose of recreating these signals or data in order to spy on the electronic device. Side-band electromagnetic radiation emissions are present in (and with the proper equipment, can be captured from) keyboards, computer displays, printers, and other electronic devices.
In 1985, Wim van Eck published the first unclassified technical analysis of the security risks of emanations from computer monitors. This paper caused some consternation in the security community, which had previously believed that such monitoring was a highly sophisticated attack available only to governments; van Eck successfully eavesdropped on a real system, at a range of hundreds of metres, using just $15 worth of equipment plus a television set.
As a consequence of this research, such emanations are sometimes called "van Eck radiation", and the eavesdropping technique van Eck phreaking. Government researchers were already aware of the danger, as Bell Labs had noted this vulnerability to secure teleprinter communications during World War II and was able to produce 75% of the plaintext being processed in a secure facility from a distance of 80 feet (24 metres). Additionally the NSA published Tempest Fundamentals, NSA-82-89, NACSIM 5000, National Security Agency (Classified) on February 1, 1982. In addition, the van Eck technique was successfully demonstrated to non-TEMPEST personnel in Korea during the Korean War in the 1950s.
While Phreaking is the process of exploiting telephone networks, it is used here because of its connection to eavesdropping. Van Eck phreaking of CRT displays is the process of eavesdropping on the contents of a CRT by detecting its electromagnetic emissions.
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- "Van Eck Phreaking" | 2021-03-23 | 127 Upvotes 60 Comments
- "Van Eck Phreaking" | 2015-12-06 | 39 Upvotes 16 Comments
π Rossum's Universal Robots
R.U.R. is a 1920 science-fiction play by the Czech writer Karel Δapek. "R.U.R." stands for Rossumovi UniverzΓ‘lnΓ Roboti (Rossum's Universal Robots, a phrase that has been used as a subtitle in English versions). The play had its world premiere on 2 January 1921 in Hradec KrΓ‘lovΓ©; it introduced the word "robot" to the English language and to science fiction as a whole. R.U.R. soon became influential after its publication. By 1923 it had been translated into thirty languages. R.U.R. was successful in its time in Europe and North America. Δapek later took a different approach to the same theme in his 1936 novel War with the Newts, in which non-humans become a servant-class in human society.
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- "Rossum's Universal Robots" | 2022-03-02 | 59 Upvotes 18 Comments