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π Saccadic masking
Saccadic masking, also known as (visual) saccadic suppression, is the phenomenon in visual perception where the brain selectively blocks visual processing during eye movements in such a way that neither the motion of the eye (and subsequent motion blur of the image) nor the gap in visual perception is noticeable to the viewer.
The phenomenon was first described by Erdmann and Dodge in 1898, when it was noticed during unrelated experiments that an observer could never see the motion of their own eyes. This can easily be duplicated by looking into a mirror, and looking from one eye to another. The eyes can never be observed in motion, yet an external observer clearly sees the motion of the eyes.
The phenomenon is often used to help explain a temporal illusion by the name of chronostasis, which momentarily occurs following a rapid eye-movement.
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- "Saccadic masking" | 2014-08-03 | 10 Upvotes 1 Comments
π Maxima (Software)
Maxima () is a computer algebra system (CAS) based on a 1982 version of Macsyma. It is written in Common Lisp and runs on all POSIX platforms such as macOS, Unix, BSD, and Linux, as well as under Microsoft Windows and Android. It is free software released under the terms of the GNU General Public License (GPL).
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- "Maxima (Software)" | 2021-11-20 | 126 Upvotes 55 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 Cephalization
Cephalization is an evolutionary trend in which, over many generations, the mouth, sense organs, and nerve ganglia become concentrated at the front end of an animal, producing a head region. This is associated with movement and bilateral symmetry, such that the animal has a definite head end. This led to the formation of a highly sophisticated brain in three groups of animals, namely the arthropods, cephalopod molluscs, and vertebrates.
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- "Cephalization" | 2020-07-23 | 14 Upvotes 2 Comments
π Yarn Bombing
Yarn bombing (or yarnbombing) is a type of graffiti or street art that employs colourful displays of knitted or crocheted yarn or fibre rather than paint or chalk. It is also called wool bombing, yarn storming, guerrilla knitting, kniffiti, urban knitting, or graffiti knitting.
π Computational sociology
Computational sociology is a branch of sociology that uses computationally intensive methods to analyze and model social phenomena. Using computer simulations, artificial intelligence, complex statistical methods, and analytic approaches like social network analysis, computational sociology develops and tests theories of complex social processes through bottom-up modeling of social interactions.
It involves the understanding of social agents, the interaction among these agents, and the effect of these interactions on the social aggregate. Although the subject matter and methodologies in social science differ from those in natural science or computer science, several of the approaches used in contemporary social simulation originated from fields such as physics and artificial intelligence. Some of the approaches that originated in this field have been imported into the natural sciences, such as measures of network centrality from the fields of social network analysis and network science.
In relevant literature, computational sociology is often related to the study of social complexity. Social complexity concepts such as complex systems, non-linear interconnection among macro and micro process, and emergence, have entered the vocabulary of computational sociology. A practical and well-known example is the construction of a computational model in the form of an "artificial society", by which researchers can analyze the structure of a social system.
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- "Computational sociology" | 2017-06-12 | 97 Upvotes 23 Comments
π List of fictional computers
Computers have often been used as fictional objects in literature, movies and in other forms of media. Fictional computers tend to be considerably more sophisticated than anything yet devised in the real world.
This is a list of computers that have appeared in notable works of fiction. The work may be about the computer, or the computer may be an important element of the story. Only static computers are included. Robots and other fictional computers that are described as existing in a mobile or humanlike form are discussed in a separate list of fictional robots and androids.
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- "List of fictional computers" | 2014-06-01 | 28 Upvotes 22 Comments
π GNS Theory
GNS theory is an informal field of study developed by Ron Edwards which attempts to create a unified theory of how role-playing games work. Focused on player behavior, in GNS theory participants in role-playing games organize their interactions around three categories of engagement: Gamism, Narrativism and Simulation.
The theory focuses on player interaction rather than statistics, encompassing game design beyond role-playing games. Analysis centers on how player behavior fits the above parameters of engagement and how these preferences shape the content and direction of a game. GNS theory is used by game designers to dissect the elements which attract players to certain types of games.
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- "GNS Theory" | 2023-06-08 | 23 Upvotes 8 Comments
π Chloropicrin
Chloropicrin, also known as PS and nitrochloroform, is a chemical compound currently used as a broad-spectrum antimicrobial, fungicide, herbicide, insecticide, and nematicide. It was used as a poison gas in World War I. Its chemical structural formula is Cl3CNO2.
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- "Chloropicrin" | 2023-08-08 | 11 Upvotes 1 Comments
π Ouzo Effect
The ouzo effect (also louche effect and spontaneous emulsification) is a milky (louche) oil-in-water emulsion that is formed when water is added to ouzo and other anise-flavored liqueurs and spirits, such as pastis, rakΔ±, arak, sambuca and absinthe. Such emulsions occur with only minimal mixing and are highly stable.
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- "Ouzo Effect" | 2022-04-23 | 13 Upvotes 2 Comments