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Stag Hunt
In game theory, the stag hunt, sometimes referred to as the assurance game, trust dilemma or common interest game, describes a conflict between safety and social cooperation. The stag hunt problem originated with philosopher Jean-Jacques Rousseau in his '' Discourse on Inequality''. In Rousseau's telling, two hunters must decide separately, and without the other knowing, whether to hunt a stag or a hare. However, both hunters know the only way to successfully hunt a stag is with the other's help. One hunter can catch a hare alone with less effort and less time, but it is worth far less than a stag and has much less meat. Rousseau therefore posits it would be much better for each hunter, acting individually, to give up total autonomy and minimal risk, which brings only the small reward of the hare. Instead, each hunter should separately choose the more ambitious and far more rewarding goal of getting the stag, thereby giving up some autonomy in exchange for the other hunter's coop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Game Theory
Game theory is the study of mathematical models of strategic interactions among rational agents. Myerson, Roger B. (1991). ''Game Theory: Analysis of Conflict,'' Harvard University Press, p.&nbs1 Chapter-preview links, ppvii–xi It has applications in all fields of social science, as well as in logic, systems science and computer science. Originally, it addressed two-person zero-sum games, in which each participant's gains or losses are exactly balanced by those of other participants. In the 21st century, game theory applies to a wide range of behavioral relations; it is now an umbrella term for the science of logical decision making in humans, animals, as well as computers. Modern game theory began with the idea of mixed-strategy equilibria in two-person zero-sum game and its proof by John von Neumann. Von Neumann's original proof used the Brouwer fixed-point theorem on continuous mappings into compact convex sets, which became a standard method in game theory and mathem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cooperation
Cooperation (written as co-operation in British English) is the process of groups of organisms working or acting together for common, mutual, or some underlying benefit, as opposed to working in competition for selfish benefit. Many animal and plant species cooperate both with other members of their own species and with members of other species (symbiosis or mutualism). Among humans Humans cooperate for the same reasons as other animals: immediate benefit, genetic relatedness, and reciprocity, but also for particularly human reasons, such as honesty signaling (indirect reciprocity), cultural group selection, and for reasons having to do with cultural evolution. Language allows humans to cooperate on a very large scale. Certain studies have suggested that fairness affects human cooperation; individuals are willing to punish at their own cost (''altruistic punishment'') if they believe that they are being treated unfairly. Sanfey, et al. conducted an experiment where 19 ind ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Social Contract
In moral and political philosophy, the social contract is a theory or model that originated during the Age of Enlightenment and usually, although not always, concerns the legitimacy of the authority of the state over the individual. Social contract arguments typically are that individuals have consented, either explicitly or tacitly, to surrender some of their freedoms and submit to the authority (of the ruler, or to the decision of a majority) in exchange for protection of their remaining rights or maintenance of the social order. The relation between natural and legal rights is often a topic of social contract theory. The term takes its name from '' The Social Contract'' (French: ''Du contrat social ou Principes du droit politique''), a 1762 book by Jean-Jacques Rousseau that discussed this concept. Although the antecedents of social contract theory are found in antiquity, in Greek and Stoic philosophy and Roman and Canon Law, the heyday of the social contract was the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prisoner's Dilemma
The Prisoner's Dilemma is an example of a game analyzed in game theory. It is also a thought experiment that challenges two completely rational agents to a dilemma: cooperate with their partner for mutual reward, or betray their partner ("defect") for individual reward. This dilemma was originally framed by Merrill Flood and Melvin Dresher while working at RAND in 1950. Albert W. Tucker appropriated the game and formalized it by structuring the rewards in terms of prison sentences and named it "prisoner's dilemma". William Poundstone in his 1993 book ''Prisoner's Dilemma'' writes the following version:Two members of a criminal gang are arrested and imprisoned. Each prisoner is in solitary confinement with no means of speaking to or exchanging messages with the other. The police admit they don't have enough evidence to convict the pair on the principal charge. They plan to sentence both to two years in prison on a lesser charge. Simultaneously, the police offer each prison ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pluralistic Ignorance
In social psychology, pluralistic ignorance refers to a situation in which the minority position on a given topic is wrongly perceived to be the majority position or where the majority position is wrongly perceived to be the minority position. This can be more simply described as "an individual who does not believe, but that individual thinks that everyone believes." Pluralistic ignorance can arise due to a number of different factors. An individual may misjudge overall perceptions of a topic due to fear, embarrassment, social desirability, or social inhibition. Any of these can lead to the individual incorrectly perceiving the proportion of the general public who share similar beliefs to oneself. As such, pluralistic ignorance can only describe the coincidence of a belief with inaccurate perceptions, but not the process to get to those inaccurate perceptions. Thus, individuals may develop pluralistic ignorance when they feel they will receive backlash on their belief as they think ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mutual Knowledge
Mutual knowledge in game theory is information known by all participatory agents. However, unlike common knowledge, a related topic, mutual knowledge does not require that all agents are aware that this knowledge is mutual. All common knowledge is mutual knowledge, but not all mutual knowledge is common knowledge. Mutual knowledge can arise accidentally, due to a failure to design the game properly, so all players independently discover this mutual knowledge, or deliberately, due to the expected course of the game. The difference between mutual knowledge and common knowledge The difference is crucial in a co-operation game. For example, in the game depicted below, with a random event determining the payoff matrix, both players, being fully rational Rationality is the quality of being guided by or based on reasons. In this regard, a person acts rationally if they have a good reason for what they do or a belief is rational if it is based on strong evidence. This quality can ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Common Knowledge (logic)
Common knowledge is a special kind of knowledge for a group of agents. There is ''common knowledge'' of ''p'' in a group of agents ''G'' when all the agents in ''G'' know ''p'', they all know that they know ''p'', they all know that they all know that they know ''p'', and so on ''ad infinitum''.Osborne, Martin J., and Ariel Rubinstein. ''A Course in Game Theory''. Cambridge, MA: MIT, 1994. Print. It can be denoted as C_G p. The concept was first introduced in the philosophical literature by David Kellogg Lewis in his study ''Convention'' (1969). The sociologist Morris Friedell defined common knowledge in a 1969 paper. It was first given a mathematical formulation in a set-theoretical framework by Robert Aumann (1976). Computer scientists grew an interest in the subject of epistemic logic in general – and of common knowledge in particular – starting in the 1980s. There are numerous puzzles based upon the concept which have been extensively investigated by mathemat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carol M
Carol may refer to: People with the name *Carol (given name) *Henri Carol (1910–1984), French composer and organist *Martine Carol (1920–1967), French film actress *Sue Carol (1906–1982), American actress and talent agent, wife of actor Alan Ladd Arts, entertainment, and media Music * Carol (music), a festive or religious song; historically also a dance ** Christmas carol, a song sung during Christmas * ''Carol'' (Carol Banawa album) (1997) * ''Carol'' (Chara album) (2009) * "Carol" (Chuck Berry song), a rock 'n roll song written and recorded by Chuck Berry in 1958 * Carol, a Japanese rock band that Eikichi Yazawa once belonged to *"The Carol", a song by Loona from ''HaSeul'' Other uses in arts, entertainment, and media * ''Carol'' (anime), an anime OVA featuring character designs by Yun Kouga * ''Carol'', the title of a 1952 novel by Patricia Highsmith better known as ''The Price of Salt'' * ''Carol'' (film), a 2015 British-American film starring Cate Blanchett and R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
James Cambias
James Cambias (also as James L. Cambias) is an American science fiction and fantasy writer and tabletop game designer. Biography Born and raised in New Orleans, Louisiana, Cambias became interested in space and astronomy at a young age. He received a degree in the History, Philosophy, and Social Studies of Science and Medicine from the University of Chicago, focusing particularly on Robert Hooke and the Royal Society. He currently lives in Western Massachusetts with his wife and two children. His early writing focused on role-playing games, particularly adventures and support material for '' Space 1889''. His first role playing book was published by Iron Crown Enterprises in 1994, and he has written or contributed to books for Last Unicorn Games, Hero Games, and Steve Jackson Games, including '' Star Trek: The Next Generation Role-playing Game'', ''GURPS Mars'', ''Star Hero'', and '' GURPS Space''. He is one of the founders of Zygote Games, and the co-designer of the game ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carousel Feeding
Carousel feeding is a cooperative hunting method used by Norwegian orcas ( ''Orcinus orca'') to capture wintering Norwegian spring-spawning herring (''Clupea harengus)''. The term carousel feeding was first used to describe a similar hunting behaviour in bottlenose dolphins ( ''Turslops truncatus'') in the Black Sea. There are two main phases of carousel feeding in orcas, the herding phase and the feeding phase. In the herding phase the orcas surround a school of herring and herd them into a tight ball. They tighten the ball by blowing bubbles, flashing their white underside and slapping their tails on the surface. They move the ball of herring toward the surface of the water before initiating the feeding phase. During the feeding phase several orcas begin to eat while the others continue herding the fish to maintain the ball. The feeding orcas whip their tails into the ball to stun and kill several herring at a time. The dead and stunned herring are then consumed and their heads and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orca
The orca or killer whale (''Orcinus orca'') is a toothed whale belonging to the oceanic dolphin family, of which it is the largest member. It is the only extant species in the genus '' Orcinus'' and is recognizable by its black-and-white patterned body. A cosmopolitan species, orcas can be found in all of the world's oceans in a variety of marine environments, from Arctic and Antarctic regions to tropical seas. Orcas have a diverse diet, although individual populations often specialize in particular types of prey. Some feed exclusively on fish, while others hunt marine mammals such as seals and other species of dolphin. They have been known to attack baleen whale calves, and even adult whales. Orcas are apex predators, as they have no natural predators. They are highly social; some populations are composed of very stable matrilineal family groups (pods) which are the most stable of any animal species. Their sophisticated hunting techniques and vocal behaviours, which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Slime Mold
Slime mold or slime mould is an informal name given to several kinds of unrelated eukaryotic organisms with a life cycle that includes a free-living single-celled stage and the formation of spores. Spores are often produced in macroscopic multicellular or multinucleate fruiting bodies which may be formed through aggregation or fusion. Slime molds were formerly classified as fungi but are no longer considered part of that kingdom (biology), kingdom. Although not forming a single Clade, monophyletic clade, they are grouped within the paraphyly, paraphyletic group Protists, Protista. More than 900 species of slime mold occur globally. Their common name refers to part of some of these organisms' life cycles where they can appear as gelatinous "slime". This is mostly seen with the Myxogastria, which are the only Macroscopic scale, macroscopic slime molds. Most slime molds are smaller than a few centimetres, but some species may reach sizes up to several square metres and masses up ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
