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Snowball Effect
A snowball effect is a process that starts from an initial state of small significance and builds upon itself (an exacerbating feedback), becoming larger (graver, more serious), and also perhaps potentially more dangerous or disastrous (a vicious circle), though it might be beneficial instead (a virtuous circle). This is a cliché in cartoons and modern theatrics, and it is also used in psychology. The common analogy is with the rolling of a snowball down a snow-covered hillside. As it rolls the ball will pick up more snow, gaining more mass and surface area, and picking up even more snow and momentum as it rolls along. In aerospace engineering, it is used to describe the multiplication effect in an original weight saving. A reduction in the weight of the fuselage will require less lift, meaning the wings can be smaller. Hence less thrust is required and therefore smaller engines, resulting in a greater weight saving than the original reduction. This iteration can be rep ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Exacerbating Feedback
Positive feedback (exacerbating feedback, self-reinforcing feedback) is a process that occurs in a feedback loop where the outcome of a process reinforces the inciting process to build momentum. As such, these forces can exacerbate the effects of a small disturbance. That is, the effects of a perturbation on a system include an increase in the magnitude of the perturbation. That is, ''A produces more of B which in turn produces more of A''.Keesing, R.M. (1981). Cultural anthropology: A contemporary perspective (2nd ed.) p.149. Sydney: Holt, Rinehard & Winston, Inc. In contrast, a system in which the results of a change act to reduce or counteract it has negative feedback. Both concepts play an important role in science and engineering, including biology, chemistry, and cybernetics. Mathematically, positive feedback is defined as a positive loop gain around a closed loop of cause and effect. That is, positive feedback is in phase with the input, in the sense that it adds to ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clapotis
In hydrodynamics, a clapotis (from French for "lapping of water") is a non-breaking standing wave pattern, caused for example, by the reflection of a traveling surface wave train from a near vertical shoreline like a breakwater, seawall or steep cliff. The resulting ''clapotic'' wave does not travel horizontally, but has a fixed pattern of nodes and antinodes. These waves promote erosion at the toe of the wall, and can cause severe damage to shore structures. The term was coined in 1877 by French mathematician and physicist Joseph Valentin Boussinesq who called these waves 'le clapotis' meaning "the lapping". In the idealized case of "full clapotis" where a purely monotonic incoming wave is completely reflected normal to a solid vertical wall, the standing wave height is twice the height of the incoming waves at a distance of one half wavelength from the wall. In this case, the circular orbits of the water particles in the deep-water wave are converted to purely linear moti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tyranny Of Small Decisions
The tyranny of small decisions is a phenomenon in which a number of decisions, individually small and insignificant in size and time perspective, cumulatively result in a larger and significant outcome which is neither optimal nor desired. The concept was first explored in an essay of the same name, published in 1966 by the American economist Alfred E. Kahn. The article describes a situation where a series of small, individually rational decisions can negatively change the context of subsequent choices, even to the point where desired alternatives are irreversibly destroyed. Kahn described the problem as a common issue in market economics which can lead to market failure. The concept has since been extended to areas other than economic ones, such as environmental degradation, political elections and health outcomes.Bickel WK and Marsch LA (2000"The Tyranny of Small Decisions: Origins, Outcomes, and Proposed Solutions"Chapter 13 in Bickel WK and Vuchinich RE (2000) ''Reframing healt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Streisand Effect
The Streisand effect is an unintended consequences, unintended consequence of attempts to hide, remove, or Censorship, censor information, where the effort instead increases public awareness of the information. The term was coined in 2005 by Mike Masnick after Barbra Streisand attempted to suppress the publication of a photograph showing her clifftop residence in Malibu, California, Malibu, taken to document coastal erosion in California, inadvertently drawing far greater attention to the previously obscure photograph. Mechanism Attempts to suppress information are often made through cease and desist, cease-and-desist letters, but instead of being suppressed, the information sometimes receives extensive publicity, as well as the creation of media such as videos and spoof songs, which can be Mirror site, mirrored on the Internet or distributed on File sharing, file-sharing networks. In addition, seeking or obtaining an injunction to prohibit something from being Publishing, p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Snowball Sampling
In sociology and statistics research, snowball sampling (or chain sampling, chain-referral sampling, referral sampling) is a nonprobability sampling technique where existing study subjects recruit future subjects from among their acquaintances. Thus the sample group is said to grow like a rolling snowball. As the sample builds up, enough data are gathered to be useful for research. This sampling technique is often used in hidden populations, such as drug users or sex workers, which are difficult for researchers to access. As sample members are not selected from a sampling frame, snowball samples are subject to numerous biases. For example, people who have many friends are more likely to be recruited into the sample. When virtual social networks are used, then this technique is called virtual snowball sampling. It was widely believed that it was impossible to make unbiased estimates from snowball samples, but a variation of snowball sampling called respondent-driven sampling has b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Slippery Slope
In a slippery slope argument, a course of action is rejected because the slippery slope advocate believes it will lead to a chain reaction resulting in an undesirable end or ends. The core of the slippery slope argument is that a specific decision under debate is likely to result in unintended consequences. The strength of such an argument depends on whether the small step really is likely to lead to the effect. This is quantified in terms of what is known as the Warrant (rhetoric), warrant (in this case, a demonstration of the process that leads to the significant effect). This type of argument is sometimes used as a form of fearmongering in which the probable consequences of a given action are exaggerated in an attempt to scare the audience. When the initial step is not demonstrably likely to result in the claimed effects, this is called the slippery slope fallacy. This is a type of informal fallacy, and is a subset of continuum fallacy, in that it ignores the possibility of mi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Self-fulfilling Prophecy
A self-fulfilling prophecy is a prediction that comes true at least in part as a result of a person's belief or expectation that the prediction would come true. In the phenomena, people tend to act the way they have been expected to in order to make the expectations come true. Self-fulfilling prophecies are an example of the more general phenomenon of positive feedback loops. A self-fulfilling prophecy can have either negative or positive outcomes. Merely applying a label to someone or something can affect the perception of the person/thing and create a self-fulfilling prophecy. Interpersonal communication plays a significant role in establishing these phenomena as well as impacting the labeling process. American sociologists W. I. Thomas and Dorothy Swaine Thomas were the first Western scholars to investigate this phenomenon. In 1928, they developed the Thomas theorem (also known as the Thomas dictum): "If men define situations as real, they are real in their consequences." Ano ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Game Balance
Game balance is a branch of game design with the intention of improving gameplay and user experience by balancing difficulty and fairness. Game balance consists of adjusting rewards, challenges, and/or elements of a game to create the intended player experience. Overview and development Game balance is generally understood as introducing a level of fairness for the players. This includes adjusting difficulty, win-loss conditions, game states, economy balancing, and so on to work in tandem with each other. The concept of game balance depends on the game genre. Most game designers agree that game balancing serves towards providing an engaging player experience, especially through a meta. Game balance is commonly discussed among game designers, some of whom include Ernest Adams, Jeannie Novak, Ian Schreiber, David Sirlin, and Jesse Schell. The topic is also featured in many YouTube channels specializing in game design topics, including Extra Credits, GMTK and Adam Millard. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Game Mechanics
In tabletop games and video games, game mechanics define how a game works for players. Game mechanics are the rules or ludemes that govern and guide player actions, as well as the game's response to them. A rule is an instruction on how to play, while a ludeme is an element of play, such as the L-shaped move of the knight in chess. The interplay of various mechanics determines the game's complexity and how the players interact with the game. All games use game mechanics; however, different Game studies, theories disagree about their degree of importance to a game. The process and study of game design includes efforts to develop game mechanics that engage players. Common examples of game mechanics include turn-taking, movement of tokens, set collection, bidding, capture, and Magic systems in games, spell slots. Definition of term There is no consensus on the precise definition of game mechanics. Competing definitions claim that game mechanics are: * "systems of interactions betwe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Road To Serfdom
''The Road to Serfdom'' is a book by the Austrian-British economist and philosopher Friedrich Hayek. In the book, Hayek of the danger of tyranny that inevitably results from government control of economic decision-making through central planning." He further argues that the abandonment of individualism and classical liberalism inevitably leads to a loss of freedom, the creation of an oppressive society, the tyranny of a dictator, and the serfdom of the individual. Hayek challenged the view, popular among British Marxists, that fascism (including Nazism) was a capitalist reaction against socialism. He argued that fascism, Nazism, and state-socialism had common roots in central economic planning and empowering the state over the individual. Since its publication in 1944, ''The Road to Serfdom'' has been popular among liberal (especially classical liberal) and conservative thinkers. It has been translated into more than 20 languages and sold over two million copies (as of 2010). Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Preferential Attachment
A preferential attachment process is any of a class of processes in which some quantity, typically some form of wealth or credit, is distributed among a number of individuals or objects according to how much they already have, so that those who are already wealthy receive more than those who are not. "Preferential attachment" is only the most recent of many names that have been given to such processes. They are also referred to under the names Yule process, cumulative advantage, the rich get richer, and the Matthew effect. They are also related to Gibrat's law. The principal reason for scientific interest in preferential attachment is that it can, under suitable circumstances, generate power law distributions. If preferential attachment is non-linear, measured distributions may deviate from a power law. These mechanisms may generate distributions which are approximately power law over transient periods. Definition A preferential attachment process is a stochastic urn p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Positive Feedback
Positive feedback (exacerbating feedback, self-reinforcing feedback) is a process that occurs in a feedback loop where the outcome of a process reinforces the inciting process to build momentum. As such, these forces can exacerbate the effects of a small disturbance. That is, the effects of a perturbation on a system include an increase in the magnitude of the perturbation. That is, ''A produces more of B which in turn produces more of A''.Keesing, R.M. (1981). Cultural anthropology: A contemporary perspective (2nd ed.) p.149. Sydney: Holt, Rinehard & Winston, Inc. In contrast, a system in which the results of a change act to reduce or counteract it has negative feedback. Both concepts play an important role in science and engineering, including biology, chemistry, and cybernetics. Mathematically, positive feedback is defined as a positive loop gain around a closed loop of cause and effect. That is, positive feedback is Phase (waves), in phase with the input, in the sense that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
