142-454: Poohsticks is a game first mentioned in The House at Pooh Corner , a Winnie-the-Pooh book by A. A. Milne . It is a simple game which may be played on any bridge over running water; each player drops a stick on the upstream side of a bridge and the one whose stick first appears on the downstream side is the winner. The annual World Poohsticks Championships have been held at Day's Lock on
284-584: A chess championship . On the other hand, players in a game may constitute their own audience as they take their turn to play. Often, part of the entertainment for children playing a game is deciding who is part of their audience and who is a player. A toy and a game are not the same. Toys generally allow for unrestricted play whereas games present rules for the player to follow. Key components of games are goals, rules , challenge , and interaction. Games generally involve mental or physical stimulation, and often both. Many games help develop practical skills , serve as
426-407: A controller or a motion sensitive tool ( console games ). More esoteric devices such as paddle controllers have also been used for input. There are many genres of video game; the first commercial video game, Pong , was a simple simulation of table tennis . As processing power increased, new genres such as adventure and action games were developed that involved a player guiding a character from
568-582: A lake , an ocean , or another river. A stream refers to water that flows in a natural channel , a geographic feature that can contain flowing water. A stream may also be referred to as a watercourse. The study of the movement of water as it occurs on Earth is called hydrology , and their effect on the landscape is covered by geomorphology . Rivers are part of the water cycle , the continuous processes by which water moves about Earth. This means that all water that flows in rivers must ultimately come from precipitation . The sides of rivers have land that
710-414: A lawn ; an area of mowed grass (or alternately, on graded soil) generally smaller than a sports field (pitch). Variations of many games that are traditionally played on a sports field are marketed as "lawn games" for home use in a front or back yard. Common lawn games include horseshoes , sholf , croquet , bocce , and lawn bowls . A tabletop game is a game where the elements of play are confined to
852-454: A river and a finish line farther downstream. The winner is the player whose stick first passes the finishing point. It is generally agreed that the stick must be made of organic materials, preferably willow , and not of any artificial materials. All participants must drop their sticks at the same time, usually after a referee shouts "drop", "twitch" or any other agreed keyword. Additionally, no advantage may be gained through either dismantling
994-503: A tarot deck of 78 cards (used in Europe to play a variety of trick-taking games collectively known as Tarot, Tarock or Tarocchi games), or a deck specific to the individual game (such as Set or 1000 Blank White Cards ). Uno and Rook are examples of games that were originally played with a standard deck and have since been commercialized with customized decks. Some collectible card games such as Magic: The Gathering are played with
1136-536: A trip hammer , and grind grains with a millstone . In the Middle Ages , water mills began to automate many aspects of manual labor , and spread rapidly. By 1300, there were at least 10,000 mills in England alone. A medieval watermill could do the work of 30–60 human workers. Water mills were often used in conjunction with dams to focus and increase the speed of the water. Water wheels continued to be used up to and through
1278-715: A boat along certain stretches. In these religions, such as that of the Altai in Russia , the river is considered a living being that must be afforded respect. Rivers are some of the most sacred places in Hinduism. There is archeological evidence that mass ritual bathing in rivers at least 5,000 years ago in the Indus river valley . While most rivers in India are revered, the Ganges is most sacred. The river has
1420-406: A bridge of known width) to calculate the speed at which the water is flowing. A game for two players or more, in the traditional version of poohsticks the participants must drop a stick simultaneously on the upstream side of a bridge and run to the other side. The winner is the player whose stick first appears on the other side of the bridge. Alternatively, players may decide upon a starting point on
1562-515: A central role in various Hindu myths, and its water is said to have properties of healing as well as absolution from sins. Hindus believe that when the cremated remains of a person is released into the Ganges, their soul is released from the mortal world. Freshwater fish make up 40% of the world's fish species, but 20% of these species are known to have gone extinct in recent years. Human uses of rivers make these species especially vulnerable. Dams and other engineered changes to rivers can block
SECTION 10
#17328549901151704-560: A community much larger than the group of players. A city or town may set aside such resources for the organization of sports leagues. Popular sports may have spectators who are entertained just by watching games. A community will often align itself with a local sports team that supposedly represents it (even if the team or most of its players only recently moved in); they often align themselves against their opponents or have traditional rivalries. The concept of fandom began with sports fans. Lawn games are outdoor games that can be played on
1846-408: A continuous flow of water throughout the year. This may be because an arid climate is too dry depending on the season to support a stream, or because a river is seasonally frozen in the winter (such as in an area with substantial permafrost ), or in the headwaters of rivers in mountains, where snowmelt is required to fuel the river. These rivers can appear in a variety of climates, and still provide
1988-428: A different game. There are exceptions to this in that some games deliberately involve the changing of their own rules, but even then there are often immutable meta -rules. Rules generally determine the time-keeping system , the rights and responsibilities of the players, scoring techniques, preset boundaries, and each player's goals. The rules of a game may be distinguished from its aims. For most competitive games,
2130-472: A form of exercise, or otherwise perform an educational, simulational , or psychological role. Attested as early as 2600 BC, games are a universal part of human experience and present in all cultures. The Royal Game of Ur , Senet , and Mancala are some of the oldest known games. Ludwig Wittgenstein was probably the first academic philosopher to address the definition of the word game . In his Philosophical Investigations , Wittgenstein argued that
2272-429: A game. Muggins , Mexican Train , and Chicken Foot are very popular domino games. Texas 42 is a domino game more similar in its play to a "trick-taking" card game . Variations of traditional dominoes abound: Triominoes are similar in theory but are triangular and thus have three values per tile. Similarly, a game known as Quad-Ominos uses four-sided tiles. Some other games use tiles in place of cards; Rummikub
2414-564: A habitat for aquatic life and perform other ecological functions. Subterranean rivers may flow underground through flooded caves. This can happen in karst systems, where rock dissolves to form caves. These rivers provide a habitat for diverse microorganisms and have become an important target of study by microbiologists . Other rivers and streams have been covered over or converted to run in tunnels due to human development. These rivers do not typically host any life, and are often used only for stormwater or flood control. One such example
2556-409: A high degree of luck, which can be directed to some extent by the player through more strategic elements of play and through tenets of probability theory . Such games are thus popular as gambling games; the game of craps is perhaps the most famous example, though liar's dice and poker dice were originally conceived of as gambling games. Domino games are similar in many respects to card games, but
2698-627: A large area in which to play them, large amounts of strength or stamina, or specialized equipment other than what comes in a box. This class of games includes any game in which the skill element involved relates to manual dexterity or hand-eye coordination, but excludes the class of video games (see below). Games such as jacks , paper football , and Jenga require only very portable or improvised equipment and can be played on any flat level surface, while other examples, such as pinball , billiards , air hockey , foosball , and table hockey require specialized tables or other self-contained modules on which
2840-503: A large number of video games have been created to simulate strategic combat), and the board may be a map on which the players' tokens move. Virtually all board games involve "turn-based" play; one player contemplates and then makes a move, then the next player does the same, and a player can only act on their turn. This is opposed to "real-time" play as is found in some card games, most sports and most video games. Some games, such as chess and Go , are entirely deterministic, relying only on
2982-495: A large scale. This has been attributed to unusually large floods destroying infrastructure; however, there is evidence that permanent changes to climate causing higher aridity and lower river flow may have been the determining factor in what river civilizations succeeded or dissolved. Water wheels began to be used at least 2,000 years ago to harness the energy of rivers. Water wheels turn an axle that can supply rotational energy to move water into aqueducts , work metal using
SECTION 20
#17328549901153124-514: A lower elevation , such as an ocean , lake , or another river. A river may run dry before reaching the end of its course if it runs out of water, or only flow during certain seasons. Rivers are regulated by the water cycle , the processes by which water moves around the Earth. Water first enters rivers through precipitation , whether from rainfall, the runoff of water down a slope, the melting of glaciers or snow , or seepage from aquifers beneath
3266-408: A new type of equilibrium strategy not found in traditional games. The entanglement of player's choices can have the effect of a contract by preventing players from profiting from what is known as betrayal . Games can take a variety of forms, from competitive sports to board games and video games. Many sports require special equipment and dedicated playing fields, leading to the involvement of
3408-444: A pawn on a board, play money , or an intangible item such as a point scored. Games such as hide-and-seek or tag do not use any obvious tool; rather, their interactivity is defined by the environment. Games with the same or similar rules may have different gameplay if the environment is altered. For example, hide-and-seek in a school building differs from the same game in a park; an auto race can be radically different depending on
3550-548: A peak in the 1970s, when between two or three dams were completed every day, and has since begun to decline. New dam projects are primarily focused in China , India , and other areas in Asia . The first civilizations of Earth were born on floodplains between 5,500 and 3,500 years ago. The freshwater, fertile soil, and transportation provided by rivers helped create the conditions for complex societies to emerge. Three such civilizations were
3692-635: A piece of information that one player knows, and the object is to coerce others into guessing that piece of information without actually divulging it in text or spoken word. Charades is probably the most well-known game of this type, and has spawned numerous commercial variants that involve differing rules on the type of communication to be given, such as Catch Phrase , Taboo , Pictionary , and similar. The genre also includes many game shows such as Win, Lose or Draw , Password and $ 25,000 Pyramid . Video games are computer- or microprocessor -controlled games. Computers can create virtual spaces for
3834-465: A play, to make all open endpoints sum to a given number or multiple, or simply to play all dominoes from one's hand onto the board. Sets vary in the number of possible dots on one end, and thus of the number of combinations and pieces; the most common set historically is double-six , though in more recent times "extended" sets such as double-nine have been introduced to increase the number of dominoes available, which allows larger hands and more players in
3976-416: A player toward winning. For instance, an intermediate aim in football is to score goals, because scoring goals will increase one's likelihood of winning the game, but is not alone sufficient to win the game. An aim identifies a sufficient condition for successful action, whereas the rule identifies a necessary condition for permissible action. For example, the aim of chess is to checkmate, but although it
4118-866: A ritualistic sense has been compared to the Christian ritual of baptism , famously the Baptism of Jesus in the Jordan River . Floods also appear in Norse mythology , where the world is said to emerge from a void that eleven rivers flowed into. Aboriginal Australian religion and Mesoamerican mythology also have stories of floods, some of which contain no survivors, unlike the Abrahamic flood. Along with mythological rivers, religions have also cared for specific rivers as sacred rivers. The Ancient Celtic religion saw rivers as goddesses. The Nile had many gods attached to it. The tears of
4260-425: A river can take several forms. Tidal rivers (often part of an estuary ) have their levels rise and fall with the tide . Since the levels of these rivers are often already at or near sea level, the flow of alluvium and the brackish water that flows in these rivers may be either upriver or downriver depending on the time of day. Rivers that are not tidal may form deltas that continuously deposit alluvium into
4402-472: A river from a bridge and, after observing how it appeared on the other side of the bridge, devises the rules for Poohsticks, later playing the game with the other characters, Christopher Robin , Tigger , and Eeyore . Milne first played the game at a bridge located in Ashdown Forest , close to the village of Upper Hartfield , East Sussex , England. Built in 1907 and originally called Posingford Bridge, it
Poohsticks - Misplaced Pages Continue
4544-756: A river such as fish , aquatic plants , and insects have different roles, including processing organic matter and predation . Rivers have produced abundant resources for humans, including food , transportation , drinking water , and recreation. Humans have engineered rivers to prevent flooding, irrigate crops, perform work with water wheels , and produce hydroelectricity from dams. People associate rivers with life and fertility and have strong religious, political, social, and mythological attachments to them. Rivers and river ecosystems are threatened by water pollution , climate change , and human activity. The construction of dams, canals , levees , and other engineered structures has eliminated habitats, has caused
4686-460: A section of the river behind them into a lake or reservoir. This can provide nearby cities with a predictable supply of drinking water. Hydroelectricity is desirable as a form of renewable energy that does not require any inputs beyond the river itself. Dams are very common worldwide, with at least 75,000 higher than 6 feet (1.8 m) in the U.S. Globally, reservoirs created by dams cover 193,500 square miles (501,000 km ). Dam-building reached
4828-424: A small area and require little physical exertion, usually simply placing, picking up and moving game pieces. Most of these games are played at a table around which the players are seated and on which the game's elements are located. However, many games falling into this category, particularly party games , are more free-form in their play and can involve physical activity such as mime. Still, these games do not require
4970-413: A small selection of cards that have been collected or purchased individually from large available sets. Some board games include a deck of cards as a gameplay element, normally for randomization or to keep track of game progress. Conversely, some card games such as Cribbage use a board with movers, normally to keep score. The differentiation between the two genres in such cases depends on which element of
5112-409: A third person perspective through a series of obstacles. This "real-time" element cannot be easily reproduced by a board game, which is generally limited to "turn-based" strategy; this advantage allows video games to simulate situations such as combat more realistically. Additionally, the playing of a video game does not require the same physical skill, strength or danger as a real-world representation of
5254-457: A true game played for entertainment or a competitive activity describable in principle by mathematical game theory. John Nash proved that games with several players have a stable solution provided that coalitions between players are disallowed. Nash won the Nobel prize for economics for this important result which extended von Neumann's theory of zero-sum games. Nash's stable solution is known as
5396-681: A variety of charities. Revival of the Oxford University Pooh Sticks Society has begun thanks to students in Magdalen College, Oxford, with the creation of the Magdalen College Pooh Sticks Society (MCPSS) founded in April 2013 which mixes classic Pooh Sticks games with commentary and rules in the style of radio programme I'm Sorry I Haven't a Clue . Of late the club has become increasingly well known inside
5538-415: A virtual environment is provided in which the player may be free to do whatever they like within the confines of a particular game's universe. Sometimes, there is a lack of goals or opposition, which has stirred some debate on whether these should be considered "games" or "toys". (Crawford specifically mentions Will Wright 's SimCity as an example of a toy.) Online games have been part of culture from
5680-438: A water body is that body's riparian zone . Plants in the riparian zone of a river help stabilize its banks to prevent erosion and filter alluvium deposited by the river on the shore, including processing the nitrogen and other nutrients it contains. Forests in a riparian zone also provide important animal habitats . River ecosystems have also been categorized based on the variety of aquatic life they can sustain, also known as
5822-692: A wide variety of countries including the United States, Japan, Kenya, Australia and England. Before its move to Witney, the event took place from Little Wittenham Bridge but now uses a bridge over the River Windrush near Cogges Manor Farm . The sporting event was started at Little Wittenham Bridge in 1984 by the lockkeeper , Lynn David, as a fund-raising event for the Royal National Lifeboat Institution (RNLI). He noticed that people occasionally snapped sticks from nearby hedges to play
Poohsticks - Misplaced Pages Continue
5964-416: A wide variety of game types. Some video games simulate conventional game objects like cards or dice, while others can simulate environs either grounded in reality or fantastical in design, each with its own set of rules or goals. A computer or video game uses one or more input devices , typically a button / joystick combination (on arcade games ); a keyboard , mouse or trackball ( computer games ); or
6106-571: A worldwide audience. The organisers announced in January 2015 that they had decided that the Little Wittenham site was no longer suitable, citing increasing logistical difficulties as the event had become more popular and the use of the land had changed. In June, the World Championships were held at their new home, one of the cycle-track bridges over the River Windrush on Langel Common, near
6248-458: A worldwide popularity of ball games such as rugby , basketball , soccer (football) , cricket , tennis , and volleyball . Other tools are more idiosyncratic to a certain region. Many countries in Europe, for instance, have unique standard decks of playing cards . Other games such as chess may be traced primarily through the development and evolution of its game pieces. Many game tools are tokens, meant to represent other things. A token may be
6390-445: Is a tributary , and the place they meet is a confluence . Rivers must flow to lower altitudes due to gravity . The bed of a river is typically within a river valley between hills or mountains . Rivers flowing through an impermeable section of land such as rocks will erode the slopes on the sides of the river. When a river carves a plateau or a similar high-elevation area, a canyon can form, with cliffs on either side of
6532-510: Is a variant of the Rummy card game family that uses tiles numbered in ascending rank among four colors, very similar in makeup to a 2-deck "pack" of Anglo-American playing cards . Mahjong is another game very similar to Rummy that uses a set of tiles with card-like values and art. Lastly, some games use graphical tiles to form a board layout, on which other elements of the game are played. Settlers of Catan and Carcassonne are examples. In each,
6674-496: Is also important for the lumber industry , as logs can be shipped via river. Countries with dense forests and networks of rivers like Sweden have historically benefited the most from this method of trade. The rise of highways and the automobile has made this practice less common. One of the first large canals was the Canal du Midi , connecting rivers within France to create a path from
6816-552: Is an ancient dam built on the Nile 4,500 years ago. The Ancient Roman civilization used aqueducts to transport water to urban areas . Spanish Muslims used mills and water wheels beginning in the seventh century. Between 130 and 1492, larger dams were built in Japan, Afghanistan, and India, including 20 dams higher than 15 metres (49 ft). Canals began to be cut in Egypt as early as 3000 BC, and
6958-448: Is at a higher elevation than the river itself, and in these areas, water flows downhill into the river. The headwaters of a river are the smaller streams that feed a river, and make up the river's source. These streams may be small and flow rapidly down the sides of mountains . All of the land uphill of a river that feeds it with water in this way is in that river's drainage basin or watershed. A ridge of higher elevation land
7100-443: Is based on the idea of a crossword puzzle , and tic-tac-toe sets with a boxed grid and pieces are available commercially). These games vary widely, from games centering on a design being drawn such as Pictionary and "connect-the-dots" games like sprouts , to letter and word games such as Boggle and Scattergories , to solitaire and logic puzzle games such as Sudoku and crossword puzzles . A guessing game has as its core
7242-405: Is because any natural impediment to the flow of the river may cause the current to deflect in a different direction. When this happens, the alluvium carried by the river can build up against this impediment, redirecting the course of the river. The flow is then directed against the opposite bank of the river, which will erode into a more concave shape to accommodate the flow. The bank will still block
SECTION 50
#17328549901157384-603: Is considered to be the bridge on which Milne and his son first played the game. However, it is uncertain whether the game was first played at the bridge and then written into the story, or vice versa. The bridge maintained the public's interest and a campaign to rebuild it in the late seventies was considered important enough to feature on the BBC Nine ;O'Clock News . The bridge was subsequently reopened by Christopher Robin Milne and officially renamed as Poohsticks Bridge . The site
7526-453: Is correlated with and thus can be used to predict certain data points related to rivers, such as the size of the drainage basin (drainage area), and the length of the channel. The ecosystem of a river includes the life that lives in its water, on its banks, and in the surrounding land. The width of the channel of a river, its velocity, and how shaded it is by nearby trees. Creatures in a river ecosystem may be divided into many roles based on
7668-403: Is expected that players will try to checkmate each other, it is not a rule of chess that a player must checkmate the other player whenever possible. Similarly, it is not a rule of football that a player must score a goal on a penalty; while it is expected the player will try, it is not required. While meeting the aims often requires a certain degree of skill and (in some cases) luck, following
7810-497: Is in part because of a projected loss of snowpack in mountains, meaning that melting snow can't replenish rivers during warm summer months, leading to lower water levels. Lower-level rivers also have warmer temperatures, threatening species like salmon that prefer colder upstream temperatures. Attempts have been made to regulate the exploitation of rivers to preserve their ecological functions. Many wetland areas have become protected from development. Water restrictions can prevent
7952-426: Is one popular example, where players must succeed in each of four skills: artistry, live performance, trivia, and language. Card games use a deck of cards as their central tool. These cards may be a standard Anglo-American (52-card) deck of playing cards (such as for bridge , poker , Rummy , etc.), a regional deck using 32, 36 or 40 cards and different suit signs (such as for the popular German game skat ),
8094-402: Is part of permafrost ice caps, or trace amounts of water vapor in the atmosphere. However, there is evidence that rivers flowed on Mars for at least 100,000 years. The Hellas Planitia is a crater left behind by an impact from an asteroid. It has sedimentary rock that was formed 3.7 billion years ago, and lava fields that are 3.3 billion years old. High resolution images of the surface of
8236-560: Is rarely static, the exact location of a river border may be called into question by countries. The Rio Grande between the United States and Mexico is regulated by the International Boundary and Water Commission to manage the right to fresh water from the river, as well as mark the exact location of the border. Up to 60% of fresh water used by countries comes from rivers that cross international borders. This can cause disputes between countries that live upstream and downstream of
8378-671: Is that of the Mississippi River , whose drainage basin covers 40% of the contiguous United States . The river was then used for shipping crops from the American Midwest and cotton from the American South to other states as well as the Atlantic Ocean. The role of urban rivers has evolved from when they were a center of trade, food, and transportation to modern times when these uses are less necessary. Rivers remain central to
8520-539: Is the Sunswick Creek in New York City, which was covered in the 1800s and now exists only as a sewer-like pipe. While rivers may flow into lakes or man-made features such as reservoirs , the water they contain will always tend to flow down toward the ocean . However, if human activity siphons too much water away from a river for other uses, the riverbed may run dry before reaching the sea. The outlets mouth of
8662-500: Is there is a lot of heavy work staging the event. Some of our members are over 70, and it was just getting too much". However, the Rotary Club of Oxford Spires declared that its members would continue hosting the event, thus preserving the competition for future generations. The President of Oxford Spires for 2008–2009, Liz Williamson, stressed that it should continue as the event was popular locally and demonstrated quirky English nature to
SECTION 60
#17328549901158804-808: Is what typically separates drainage basins; water on one side of a ridge will flow into one set of rivers, and water on the other side will flow into another. One example of this is the Continental Divide of the Americas in the Rocky Mountains . Water on the western side of the divide flows into the Pacific Ocean , whereas water on the other side flows into the Atlantic Ocean . Not all precipitation flows directly into rivers; some water seeps into underground aquifers . These, in turn, can still feed rivers via
8946-587: The 2024 Summer Olympics . Another example is the restoration of the Isar in Munich from being a fully canalized channel with hard embankments to being wider with naturally sloped banks and vegetation. This has improved wildlife habitat in the Isar, and provided more opportunities for recreation in the river. As a natural barrier , rivers are often used as a border between countries , cities, and other territories . For example,
9088-479: The Atlantic Ocean to the Mediterranean Sea . The nineteenth century saw canal-building become more common, with the U.S. building 4,400 miles (7,100 km) of canals by 1830. Rivers began to be used by cargo ships at a larger scale, and these canals were used in conjunction with river engineering projects like dredging and straightening to ensure the efficient flow of goods. One of the largest such projects
9230-492: The Industrial Revolution as a source of power for textile mills and other factories, but were eventually supplanted by steam power . Rivers became more industrialized with the growth of technology and the human population . As fish and water could be brought from elsewhere, and goods and people could be transported via railways , pre-industrial river uses diminished in favor of more complex uses. This meant that
9372-755: The Lamari River in New Guinea separates the Angu and the Fore people in New Guinea. The two cultures speak different languages and rarely mix. 23% of international borders are large rivers (defined as those over 30 meters wide). The traditional northern border of the Roman Empire was the Danube , a river that today forms the border of Hungary and Slovakia . Since the flow of a river
9514-474: The Nash equilibrium . If cooperation between players is allowed, then the game becomes more complex; many concepts have been developed to analyze such games. While these have had some partial success in the fields of economics, politics and conflict , no good general theory has yet been developed. In quantum game theory , it has been found that the introduction of quantum information into multiplayer games allows
9656-517: The Nile and the Ganges . The Quran describes these four rivers as flowing with water, milk, wine, and honey, respectively. The book of Genesis also contains a story of a great flood . Similar myths are present in the Epic of Gilgamesh , Sumerian mythology, and in other cultures. In Genesis, the flood's role was to cleanse Earth of the wrongdoing of humanity. The act of water working to cleanse humans in
9798-558: The River Continuum Concept . "Shredders" are organisms that consume this organic material. The role of a "grazer" or "scraper" organism is to feed on the algae that collects on rocks and plants. "Collectors" consume the detritus of dead organisms. Lastly, predators feed on living things to survive. The river can then be modeled by the availability of resources for each creature's role. A shady area with deciduous trees might experience frequent deposits of organic matter in
9940-608: The River Lethe to forget their previous life. Rivers also appear in descriptions of paradise in Abrahamic religions , beginning with the story of Genesis . A river beginning in the Garden of Eden waters the garden and then splits into four rivers that flow to provide water to the world. These rivers include the Tigris and Euphrates , and two rivers that are possibly apocryphal but may refer to
10082-551: The River Thames in the UK since 1984. Poohsticks was invented by English author A.A. Milne for his son Christopher Robin Milne . The game first came to prominence upon Milne's description in his 1928 book The House at Pooh Corner , as well as the 1983 Disney animated featurette Winnie the Pooh and a Day for Eeyore . As first depicted, protagonist Pooh accidentally drops a pine cone into
10224-753: The Sumerians in the Tigris–Euphrates river system , the Ancient Egyptian civilization in the Nile, and the Indus Valley Civilization on the Indus River . The desert climates of the surrounding areas made these societies especially reliant on rivers for survival, leading to people clustering in these areas to form the first cities . It is also thought that these civilizations were the first to organize
10366-485: The climate . The alluvium carried by rivers, laden with minerals, is deposited into the floodplain when the banks spill over, providing new nutrients to the soil, allowing them to support human activity like farming as well as a host of plant and animal life. Deposited sediment from rivers can form temporary or long-lasting fluvial islands . These islands exist in almost every river. About half of all waterways on Earth are intermittent rivers , which do not always have
10508-611: The cultural identity of cities and nations. Famous examples include the River Thames 's relationship to London , the Seine to Paris , and the Hudson River to New York City . The restoration of water quality and recreation to urban rivers has been a goal of modern administrations. For example, swimming was banned in the Seine for over 100 years due to concerns about pollution and the spread of E. coli , until cleanup efforts to allow its use in
10650-478: The discharge of a river, the amount of water passing through it at a particular time. The flow of a river can act as a means of transportation for plant and animal species, as well as a barrier. For example, the Amazon River is so wide in parts that the variety of species on either side of its basin are distinct. Some fish may swim upstream to spawn as part of a seasonal migration . Species that travel from
10792-465: The extinction of some species, and lowered the amount of alluvium flowing through rivers. Decreased snowfall from climate change has resulted in less water available for rivers during the summer. Regulation of pollution, dam removal , and sewage treatment have helped to improve water quality and restore river habitats. A river is a natural flow of freshwater that flows on or through land towards another body of water downhill. This flow can be into
10934-436: The sea . The sediment yield of a river is the quantity of sand per unit area within a watershed that is removed over a period of time. The monitoring of the sediment yield of a river is important for ecologists to understand the health of its ecosystems, the rate of erosion of the river's environment, and the effects of human activity. Rivers rarely run in a straight direction, instead preferring to bend or meander . This
11076-399: The track or street course, even with the same cars. Games are often characterized by their tools and rules. While rules are subject to variations and changes , enough change in the rules usually results in a "new" game. For instance, baseball can be played with "real" baseballs or with wiffleballs . However, if the players decide to play with only three bases, they are arguably playing
11218-532: The ultimate aim is winning: in this sense, checkmate is the aim of chess. Common win conditions are being first to amass a certain quota of points or tokens (as in Settlers of Catan ), having the greatest number of tokens at the end of the game (as in Monopoly ), or some relationship of one's game tokens to those of one's opponent (as in chess's checkmate ). There may also be intermediate aims, which are tasks that move
11360-521: The water table , the groundwater beneath the surface of the land stored in the soil . Water flows into rivers in places where the river's elevation is lower than that of the water table. This phenomenon is why rivers can still flow even during times of drought . Rivers are also fed by the melting of snow glaciers present in higher elevation regions. In summer months, higher temperatures melt snow and ice, causing additional water to flow into rivers. Glacier melt can supplement snow melt in times like
11502-695: The "board" is made up of a series of tiles; in Settlers of Catan the starting layout is random but static, while in Carcassonne the game is played by "building" the board tile-by-tile. Hive , an abstract strategy game using tiles as moving pieces, has mechanical and strategic elements similar to chess , although it has no board; the pieces themselves both form the layout and can move within it. Pencil and paper games require little or no specialized equipment other than writing materials, though some such games have been commercialized as board games ( Scrabble , for instance,
11644-458: The 40th anniversary, at Sandford-on-Thames . The winners of both the individual and team events receive a trophy or medal, and the second and third-placed individuals and teams also receive a smaller trophy or certificate. Despite claims that the game involves skill more than luck, no team or individual has ever won the competition more than once. The individual competition usually involves winning three rounds of matches before receiving an entry to
11786-578: The Cogges Manor Farm Museum in Witney, Oxfordshire. For the first year at the new location, the organizers decided not to hold the 2015 team games, but team games were restored in 2016. The event continued to be held here until 2018; in 2019, the event was not held due to resourcing issues, and between 2020 and 2022 it was cancelled due to the COVID-19 pandemic . It restarted on 28th May 2023, commemorating
11928-469: The Manor Born and also in a Marks & Spencer clothes advert where models, including Twiggy and Myleene Klass , played the game. The popularity of the game was underlined when it featured as a question on long-running British quiz series University Challenge . The "Pooh-stick method" of estimating the flow of a stream gets its name from the use of one or more floating objects (typically passing under
12070-502: The best strategic move based on the roll of two dice . Trivia games have a great deal of randomness based on the questions a person gets. German-style board games are notable for often having rather less of a luck factor than many board games. Board game groups include race games , roll-and-move games, abstract strategy games , word games , and wargames , as well as trivia and other elements. Some board games fall into multiple groups or incorporate elements of other genres: Cranium
12212-695: The bodies of humans and animals worldwide, as well as in the soil, with potentially negative health effects. Research into how to remove it from the environment, and how harmful exposure is, is ongoing. Fertilizer from farms can lead to a proliferation of algae on the surface of rivers and oceans, which prevents oxygen and light from dissolving into water, making it impossible for underwater life to survive in these so-called dead zones . Urban rivers are typically surrounded by impermeable surfaces like stone, asphalt , and concrete. Cities often have storm drains that direct this water to rivers. This can cause flooding risk as large amounts of water are directed into
12354-413: The bridge or the use of any self-propelling stick devices. The stick must be dropped, not thrown, into the water and any player who is deemed to have thrown their stick is disqualified. Poohsticks is considered to be a game of chance yet some players, including the 2024 World Champion, claim skill is involved. Some strategies involve the way in which the stick is held before it is dropped and trying to find
12496-405: The complete draining of rivers. Limits on the construction of dams, as well as dam removal , can restore the natural habitats of river species. Regulators can also ensure regular releases of water from dams to keep animal habitats supplied with water. Limits on pollutants like pesticides can help improve water quality. Today, the surface of Mars does not have liquid water. All water on Mars
12638-467: The dice has a profound impact on the outcome of the game, however dice games are differentiated in that the dice do not determine the success or failure of some other element of the game; they instead are the central indicator of the person's standing in the game. Popular dice games include Yahtzee , Farkle , Bunco , liar's dice / Perudo , and poker dice . As dice are, by their very nature, designed to produce random numbers , these games usually involve
12780-436: The effect of normalizing the effects of rivers; the greatest floods are smaller and more predictable, and larger sections are open for navigation by boats and other watercraft. A major effect of river engineering has been a reduced sediment output of large rivers. For example, the Mississippi River produced 400 million tons of sediment per year. Due to the construction of reservoirs , sediment buildup in man-made levees , and
12922-440: The elements of games, such as play , rules, and competition, all fail to adequately define what games are. From this, Wittgenstein concluded that people apply the term game to a range of disparate human activities that bear to one another only what one might call family resemblances . As the following game definitions show, this conclusion was not a final one and today many philosophers, like Thomas Hurka , think that Wittgenstein
13064-402: The fastest route in the river. Author Ben Schott outlined a throwing method as a winning strategy in his third book, Schott's Sporting, Gaming and Idling Miscellany , but his method was dismissed as cheating by competition organisers. In any event, the turbulence around the bridge supports make the path of the stick very difficult to predict and may vary according to the season. Poohsticks
13206-554: The final. Although not a Poohsticks Society as such, the Rotary Club of Abingdon is now responsible for the World Pooh Sticks Championships held annually since 1983, first at Days Lock on the River Thames, then in Witney 2015 to 2018. and the event held in 2023. The Championships were voted 'Britain's Favourite Quirky Event' by Countryfile magazine readers in 2012 and are carried out with the aim of raising money for
13348-451: The fish zonation concept. Smaller rivers can only sustain smaller fish that can comfortably fit in its waters, whereas larger rivers can contain both small fish and large fish. This means that larger rivers can host a larger variety of species. This is analogous to the species-area relationship , the concept of larger habitats being host to more species. In this case, it is known as the species-discharge relationship, referring specifically to
13490-665: The floating of wood on rivers to transport it, was especially important. Rivers also were an important source of drinking water . For civilizations built around rivers, fish were an important part of the diet of humans. Some rivers supported fishing activities, but were ill-suited to farming, such as those in the Pacific Northwest . Other animals that live in or near rivers like frogs , mussels , and beavers could provide food and valuable goods such as fur . Humans have been building infrastructure to use rivers for thousands of years. The Sadd el-Kafara dam near Cairo , Egypt,
13632-412: The flow of the river beneath its surface. These help rivers flow straighter by increasing the speed of the water at the middle of the channel, helping to control floods. Levees are also used for this purpose. They can be thought of as dams constructed on the sides of rivers, meant to hold back water from flooding the surrounding area during periods of high rainfall. They are often constructed by building up
13774-399: The flow, causing it to reflect in the other direction. Thus, a bend in the river is created. Rivers may run through low, flat regions on their way to the sea. These places may have floodplains that are periodically flooded when there is a high level of water running through the river. These events may be referred to as "wet seasons' and "dry seasons" when the flooding is predictable due to
13916-650: The form of leaves. In this type of ecosystem, collectors and shredders will be most active. As the river becomes deeper and wider, it may move slower and receive more sunlight . This supports invertebrates and a variety of fish , as well as scrapers feeding on algae. Further downstream, the river may get most of its energy from organic matter that was already processed upstream by collectors and shredders. Predators may be more active here, including fish that feed on plants, plankton , and other fish. The flood pulse concept focuses on habitats that flood seasonally, including lakes and marshes . The land that interfaces with
14058-435: The game and he then came up with the idea of a competition to aid the charity. He put out a box of sticks and a collection box and it soon became an annual event. In this championship version of the game, a finish line is set up farther downstream and the winner is the first to pass this point. The competition originally took place every January, but it was moved to March due to icy weather in 1997. The event proved popular with
14200-419: The game is foremost in its play; a board game using cards for random actions can usually use some other method of randomization, while Cribbage can just as easily be scored on paper. These elements as used are simply the traditional and easiest methods to achieve their purpose. Dice games use a number of dice as their central element. Board games often use dice for a randomization element, and thus each roll of
14342-409: The game is played. The advent of home video game systems largely replaced some of these, such as table hockey, however air hockey, billiards, pinball and foosball remain popular fixtures in private and public game rooms. These games and others, as they require reflexes and coordination, are generally performed more poorly by intoxicated persons but are unlikely to result in injury because of this; as such
14484-464: The game, and can provide either very realistic, exaggerated or impossible physics, allowing for elements of a fantastical nature, games involving physical violence, or simulations of sports. Lastly, a computer can, with varying degrees of success, simulate one or more human opponents in traditional table games such as chess , leading to simulations of such games that can be played by a single player. In more open-ended video games, such as sandbox games ,
14626-408: The games are popular as drinking games . In addition, dedicated drinking games such as quarters and beer pong also involve physical coordination and are popular for similar reasons. Board games use as a central tool a board on which the players' status, resources, and progress are tracked using physical tokens. Many also involve dice or cards. Most games that simulate war are board games (though
14768-436: The generic device is instead a set of tiles called dominoes , which traditionally each have two ends, each with a given number of dots, or "pips", and each combination of two possible end values as it appears on a tile is unique in the set. The games played with dominoes largely center around playing a domino from the player's "hand" onto the matching end of another domino, and the overall object could be to always be able to make
14910-583: The globe, and had been broadcast on television in countries including Russia, Japan and Czech Republic. Additionally, VisitBritain , the official British tourist board, named it as a highlight in its collection of "Quirky British Events". Throughout its existence, it has raised around £30,000 for the RNLI. The Championships were at risk of decline when, in 2008, Sinodun Rotary Club declared that its members were simply too old to stage an annual event of its size. The then Sinodun president, David Caswell, stated: "The trouble
15052-502: The goddess Isis were said to be the cause of the river's yearly flooding, itself personified by the goddess Hapi . Many African religions regard certain rivers as the originator of life. In Yoruba religion , Yemọja rules over the Ogun River in modern-day Nigeria and is responsible for creating all children and fish. Some sacred rivers have religious prohibitions attached to them, such as not being allowed to drink from them or ride in
15194-428: The irrigation of desert environments for growing food. Growing food at scale allowed people to specialize in other roles, form hierarchies, and organize themselves in new ways, leading to the birth of civilization. In pre-industrial society , rivers were a source of transportation and abundant resources. Many civilizations depended on what resources were local to them to survive. Shipping of commodities, especially
15336-410: The lack of any formidable opposition. Many games described as "single-player" may be termed actually puzzles or recreations . A multiplayer game is a game of several players who may be independent opponents or teams. Games with many independent players are difficult to analyze formally using game theory as the players may form and switch coalitions . The term "game" in this context may mean either
15478-440: The landscape around it, forming deltas and islands where the flow slows down. Rivers rarely run in a straight line, instead, they bend or meander ; the locations of a river's banks can change frequently. Rivers get their alluvium from erosion , which carves rock into canyons and valleys . Rivers have sustained human and animal life for millennia, including the first human civilizations . The organisms that live around or in
15620-434: The late summer, when there may be less snow left to melt, helping to ensure that the rivers downstream of the glaciers have a continuous supply of water. Rivers flow downhill, with their direction determined by gravity . A common misconception holds that all or most rivers flow from North to South, but this is not true. As rivers flow downstream, they eventually merge to form larger rivers. A river that feeds into another
15762-469: The level of river branching in a drainage basin. Several systems of stream order exist, one of which is the Strahler number . In this system, the first tributaries of a river are 1st order rivers. When two 1st order rivers merge, the resulting river is 2nd order. If a river of a higher order and a lower order merge, the order is incremented from whichever of the previous rivers had the higher order. Stream order
15904-436: The local community and even attracted the attention of the foreign media. After Lynn David's retirement, the running of the event was taken over by the former Rotary Club of Sinodun, based in nearby Wallingford . Additionally, the funds raised were divided between the RNLI and charitable projects supported by the Rotary Club. Twenty years after its first edition, the event had grown in popularity, attracting visitors from across
16046-561: The local ecosystems of rivers needed less protection as humans became less reliant on them for their continued flourishing. River engineering began to develop projects that enabled industrial hydropower , canals for the more efficient movement of goods, as well as projects for flood prevention . River transportation has historically been significantly cheaper and faster than transportation by land. Rivers helped fuel urbanization as goods such as grain and fuel could be floated downriver to supply cities with resources. River transportation
16188-407: The mechanical shadoof began to be used to raise the elevation of water. Drought years harmed crop yields, and leaders of society were incentivized to ensure regular water and food availability to remain in power. Engineering projects like the shadoof and canals could help prevent these crises. Despite this, there is evidence that floodplain-based civilizations may have been abandoned occasionally at
16330-400: The migration routes of fish and destroy habitats. Rivers that flow freely from headwaters to the sea have better water quality, and also retain their ability to transport nutrient-rich alluvium and other organic material downstream, keeping the ecosystem healthy. The creation of a lake changes the habitat of that portion of water, and blocks the transportation of sediment, as well as preventing
16472-399: The natural meandering of the river. Dams block the migration of fish such as salmon for which fish ladder and other bypass systems have been attempted, but these are not always effective. Pollution from factories and urban areas can also damage water quality. " Per- and polyfluoroalkyl substances (PFAS) is a widely used chemical that breaks down at a slow rate. It has been found in
16614-429: The natural terrain with soil or clay. Some levees are supplemented with floodways, channels used to redirect floodwater away from farms and populated areas. Dams restrict the flow of water through a river. They can be built for navigational purposes, providing a higher level of water upstream for boats to travel in. They may also be used for hydroelectricity , or power generation from rivers. Dams typically transform
16756-523: The original supplemented by similarly aged timber, and located near Penshurst , Kent, was sold at auction for over £131,000 (equivalent to about £156,000 in 2023) in October 2021. The buyer, Lord De La Warr , intends to give it "pride of place" on his estate, Buckhurst Park, Sussex . The traditional game has inspired filmmakers and screenwriters and has been portrayed in the 1998 film Into My Heart with Rob Morrow and Claire Forlani , BBC sitcom To
16898-440: The outcome. Many other games involving a high degree of luck do not allow direct attacks between opponents; the random event simply determines a gain or loss in the standing of the current player within the game, which is independent of any other player; the "game" then is actually a "race" by definitions such as Crawford's. Most other board games combine strategy and luck factors; the game of backgammon requires players to decide
17040-425: The plain show evidence of a river network, and even river deltas. These images reveal channels formed in the rock, recognized by geologists who study rivers on Earth as being formed by rivers, as well as "bench and slope" landforms, outcroppings of rock that show evidence of river erosion. Not only do these formations suggest that rivers once existed, but that they flowed for extensive time periods, and were part of
17182-453: The player does". This is often referred to as gameplay . Major key elements identified in this context are tools and rules that define the overall context of game. Games are often classified by the components required to play them (e.g. miniatures , a ball , cards , a board and pieces , or a computer ). In places where the use of leather is well-established, the ball has been a popular game piece throughout recorded history, resulting in
17324-448: The removal of natural banks replaced with revetments , this sediment output has been reduced by 60%. The most basic river projects involve the clearing of obstructions like fallen trees. This can scale up to dredging , the excavation of sediment buildup in a channel, to provide a deeper area for navigation. These activities require regular maintenance as the location of the river banks changes over time, floods bring foreign objects into
17466-530: The reverse, death and destruction, especially through floods . This power has caused rivers to have a central role in religion , ritual , and mythology . In Greek mythology , the underworld is bordered by several rivers. Ancient Greeks believed that the souls of those who perished had to be borne across the River Styx on a boat by Charon in exchange for money. Souls that were judged to be good were admitted to Elysium and permitted to drink water from
17608-461: The river, and natural sediment buildup continues. Artificial channels are often constructed to "cut off" winding sections of a river with a shorter path, or to direct the flow of a river in a straighter direction. This effect, known as channelization, has made the distance required to traverse the Missouri River in 116 kilometres (72 mi) shorter. Dikes are channels built perpendicular to
17750-552: The river. Areas of a river with softer rock weather faster than areas with harder rock, causing a difference in elevation between two points of a river. This can cause the formation of a waterfall as the river's flow falls down a vertical drop. A river in a permeable area does not exhibit this behavior and may even have raised banks due to sediment. Rivers also change their landscape through their transportation of sediment , often known as alluvium when applied specifically to rivers. This debris comes from erosion performed by
17892-620: The river. A country that is downstream of another may object to the upstream country diverting too much water for agricultural uses, pollution, as well as the creation of dams that change the river's flow characteristics. For example, Egypt has an agreement with Sudan requiring a specific minimum volume of water to pass into the Nile yearly over the Aswan Dam , to maintain both countries access to water. The importance of rivers throughout human history has given them an association with life and fertility . They have also become associated with
18034-457: The rivers themselves, debris swept into rivers by rainfall, as well as erosion caused by the slow movement of glaciers. The sand in deserts and the sediment that forms bar islands is from rivers. The particle size of the debris is gradually sorted by the river, with heavier particles like rocks sinking to the bottom, and finer particles like sand or silt carried further downriver . This sediment may be deposited in river valleys or carried to
18176-412: The rivers. Due to these impermeable surfaces, these rivers often have very little alluvium carried in them, causing more erosion once the river exits the impermeable area. It has historically been common for sewage to be directed directly to rivers via sewer systems without being treated, along with pollution from industry. This has resulted in a loss of animal and plant life in urban rivers, as well as
18318-1332: The rules of a game merely requires knowledge of the rules and some careful attempt to follow them; it rarely (if ever) requires luck or demanding skills. A game's tools and rules will result in its requiring skill, strategy, luck , or a combination thereof, and are classified accordingly. Games of skill include games of physical skill, such as wrestling , tug of war , hopscotch , target shooting , and games of mental skill such as checkers and chess . Games of strategy include checkers, chess, Go , arimaa , and tic-tac-toe , and often require special equipment to play them. Games of chance include gambling games ( blackjack , Mahjong , roulette , etc.), as well as snakes and ladders and rock, paper, scissors ; most require equipment such as cards or dice . However, most games contain two or all three of these elements. For example, American football and baseball involve both physical skill and strategy while tiddlywinks , poker , and Monopoly combine strategy and chance. Many card and board games combine all three; most trick-taking games involve mental skill, strategy, and an element of chance, as do many strategic board games such as Risk , Settlers of Catan , and Carcassonne . Most games require multiple players. However, single-player games are unique in respect to
18460-409: The sea from their mouths. Depending on the activity of waves, the strength of the river, and the strength of the tidal current, the sediment can accumulate to form new land. When viewed from above, a delta can appear to take the form of several triangular shapes as the river mouth appears to fan out from the original coastline . In hydrology , a stream order is a positive integer used to describe
18602-414: The sea to breed in freshwater rivers are anadromous. Salmon are an anadromous fish that may die in the river after spawning, contributing nutrients back to the river ecosystem. Modern river engineering involves a large-scale collection of independent river engineering structures that have the goal of flood control , improved navigation, recreation, and ecosystem management. Many of these projects have
18744-519: The spread of waterborne diseases such as cholera . In modern times, sewage treatment and controls on pollution from factories have improved the water quality of urban rivers. Climate change can change the flooding cycles and water supply available to rivers. Floods can be larger and more destructive than expected, causing damage to the surrounding areas. Floods can also wash unhealthy chemicals and sediment into rivers. Droughts can be deeper and longer, causing rivers to run dangerously low. This
18886-556: The strategy element for their interest. Such games are usually described as having " perfect information "; the only unknown is the exact thought processes of one's opponent, not the outcome of any unknown event inherent in the game (such as a card draw or die roll). Children's games, on the other hand, tend to be very luck-based, with games such as Candy Land and Chutes and Ladders having virtually no decisions to be made. By some definitions, such as that by Greg Costikyan , they are not games since there are no decisions to make which affect
19028-410: The surface of the Earth. Rivers flow in channeled watercourses and merge in confluences to form drainage basins , areas where surface water eventually flows to a common outlet. Rivers have a great effect on the landscape around them. They may regularly overflow their banks and flood the surrounding area, spreading nutrients to the surrounding area. Sediment or alluvium carried by rivers shapes
19170-408: The type of challenges a player faces. Unlike a game with multiple players competing with or against each other to reach the game's goal, a one-player game is a battle solely against an element of the environment (an artificial opponent), against one's own skills, against time, or against chance. Playing with a yo-yo or playing tennis against a wall is not generally recognized as playing a game due to
19312-1136: The university and is no longer restricted solely to members of Magdalen College. Founded in 1993, members of the Pembroke College Winnie the Pooh Society of Pembroke College, Cambridge , pay homage to the works of A.A. Milne in a variety of ways, including playing games of Poohsticks alongside events such as visits to the 'real-life' Hundred Acre Wood. Game A game is a structured type of play , usually undertaken for entertainment or fun , and sometimes used as an educational tool. Many games are also considered to be work (such as professional players of spectator sports or games) or art (such as jigsaw puzzles or games involving an artistic layout such as mahjong , solitaire , or some video games ). Games are sometimes played purely for enjoyment, sometimes for achievement or reward as well. They can be played alone, in teams, or online; by amateurs or by professionals. The players may have an audience of non-players, such as when people are entertained by watching
19454-473: The very earliest days of networked and time-shared computers. Early commercial systems such as Plato were at least as widely famous for their games as for their strictly educational value. In 1958, Tennis for Two dominated Visitor's Day and drew attention to the oscilloscope at the Brookhaven National Laboratory ; during the 1980s, Xerox PARC was known mainly for Maze War , which
19596-506: Was also placed to commemorate the occasion and thank those who financially contributed to the project. The game can still be played in Ashdown Forest to this day and the site regularly attracts tourists from as far afield as the United States and Japan. However, visitors are now advised to bring their own sticks, as previous visitors have caused damage to the trees in the vicinity. The 'original' Poohsticks Bridge, reconstructed from parts of
19738-524: Was brought to a larger audience by the annual World Poohsticks Championships. Originally, these took place at Day's Lock on the River Thames near Dorchester-on-Thames , Oxfordshire . but were later moved to Langel Common in Witney , also in Oxfordshire, and have attracted over 1,500 visitors, including many from overseas. The championships features an individual event and a four-person team event. Players come from
19880-476: Was offered as a hands-on demo to visitors. Modern online games are played using an Internet connection; some have dedicated client programs, while others require only a web browser . Some simpler browser games appeal to more casual game-playing demographic groups (notably older audiences) that otherwise play very few video games. River A river is a natural freshwater stream that flows on land or inside caves towards another body of water at
20022-543: Was so popular that, in 1999, the East Sussex county council made an appeal to Disney as the old wooden bridge had been worn down by an overwhelming number of visitors. The company provided a substantial donation towards the estimated £30,000 needed to replace the bridge. Partly rebuilt in 1979, the donations from Disney, building firms, and members of the public funded its complete reconstruction. The newly-built and modernised bridge retained its precursor's original style. A plaque
20164-753: Was wrong and that Bernard Suits' definition is a good answer to the problem. French sociologist Roger Caillois , in his book Les jeux et les hommes (Games and Men) (1961), defined a game as an activity that must have the following characteristics: Game designer Chris Crawford defined the term in the context of computers. Using a series of dichotomies : Crawford's definition may thus be rendered as: an interactive, goal-oriented activity made for money, with active agents to play against, in which players (including active agents) can interfere with each other. Other definitions, however, as well as history, show that entertainment and games are not necessarily undertaken for monetary gain. Games can be characterized by "what
#114885