Alemming is a small rodent, usually found in or near the Arctic in tundra biomes. Lemmings form the subfamily Arvicolinae (also known as Microtinae) together with voles and muskrats, which form part of the superfamily Muroidea, which also includes rats, mice, hamsters and gerbils. In popular culture, a longstanding myth holds that they exhibit herd mentality and jump off cliffs, committing mass suicide.
Like many other rodents, lemmings have periodic population booms and then disperse in all directions, seeking food and shelter their natural habitats cannot provide. The Norway lemming and West Siberian lemming are two of the few vertebrates which reproduce so quickly that their population fluctuations are chaotic,[4][5] rather than following linear growth to a carrying capacity or regular oscillations. Why lemming populations fluctuate with such great variance roughly every four years, before numbers drop to near extinction, is not known.[6] Lemming behaviour and appearance are markedly different from those of other rodents, which are inconspicuously coloured and try to conceal themselves from their predators. Lemmings, by contrast, are conspicuously coloured and behave aggressively toward predators and even human observers. The lemming defence system is thought to be based on aposematism (warning display).[7] Fluctuations in the lemming population affect the behaviour of predators, and may fuel irruptions of birds of prey such as snowy owls to areas further south.[8]For many years, the population of lemmings was believed to change with the population cycle, but now some evidence suggests their predators' populations, particularly those of the stoat, may be more closely involved in changing the lemming population.[citation needed]
Misconceptions about lemmings go back many centuries. In 1532, the geographer Jacob Ziegler of Bavaria proposed the theory that the creatures fell out of the sky during stormy weather[9][10] and then died suddenly when the grass grew in spring.[11] This description was contradicted by natural historian Ole Worm, who accepted that lemmings could fall out of the sky, but claimed that they had been brought over by the wind rather than created by spontaneous generation. Worm published dissections of a lemming, which showed that they are anatomically similar to most other rodents such as voles and hamsters, and the work of Carl Linnaeus proved that they had a natural origin.
Lemmings have become the subject of a widely popular misconception that they are driven to commit mass suicide when they migrate by jumping off cliffs or drowning in bodies of water. According to the myth, it is not a deliberate mass suicide, in which animals voluntarily choose to die, but rather a result of their migratory behavior. Driven by strong biological urges, some species of lemmings may migrate in large groups when population density becomes too great. Thus, the unexplained fluctuations in the population of Norwegian lemmings helped give rise to the popular stereotype of the suicidal lemmings, particularly after this behaviour was staged in the Walt Disney documentary White Wilderness in 1958.[13] The misconception itself is much older, dating back to at least the late 19th century. In the August 1877 issue of Popular Science Monthly, apparently suicidal lemmings are presumed to be swimming in the Atlantic Ocean in search of the submerged continent of Lemuria.[14]
In 1955, Disney Studio illustrator Carl Barks drew an Uncle Scrooge adventure comic with the title "The Lemming with the Locket". This comic, which was inspired by a 1953 American Mercury article, showed massive numbers of lemmings jumping over Norwegian cliffs.[15][16]
Lemmings also appear in Arthur C. Clarke's 1953 short story "The Possessed", where their suicidal urges are attributed to the lingering consciousness of an alien group mind, which had inhabited the species in the prehistoric past.[17]
Perhaps the most influential and infamous presentation of the myth was the 1958 Disney film White Wilderness, which won an Academy Award for Documentary Feature and in which producers threw lemmings off a cliff to their deaths to fake footage of a "mass suicide", as well as faked scenes of mass migration.[18] A Canadian Broadcasting Corporation documentary, Cruel Camera, found the lemmings used for White Wilderness were flown from Hudson Bay to Calgary, Alberta, Canada, where, far from "casting themselves bodily out into space" (as the film's narrator states), they were, in fact, dumped off the cliff by the camera crew from a truck.[19][20] Because of the limited number of lemmings at their disposal, which in any case were the wrong subspecies, the migration scenes were simulated using tight camera angles and a large, snow-covered turntable.
The song "Lemmings (Including 'Cog')" from the 1971 album Pawn Hearts by progressive rock band Van der Graaf Generator is about a person who sees their loved ones "crashing on quite blindly to the sea".[21]
The 1976 album "Howlin' Wind," which introduced Graham Parker and the Rumour, includes the song "Don't Ask Me Questions," whose lyrics include the lines, "I see the thousands screamin'/Rushin' for the cliffs/Just like lemmings/Into the sea."
The 1983 song Synchronicity II by The Police makes an allusion to the supposed suicidal tendencies of lemmings in its reference to commuters "packed like lemmings into shiny metal boxes, contestants in a suicidal race."
In 1991, a puzzle-platform video game called Lemmings was released, in which the player must save a certain percentage of the titular small humanoid creatures as they march heedlessly through a dangerous environment. The game and its sequels had sold 4 million copies by 1995.[22]
Lemmings are main characters of the 2016 French animated television series Grizzy and the Lemmings. As a humorous allusion to the popular myth, the series frequently features lemmings jumping down from elevated platforms.
The objective of the game is to guide a group of anthropomorphised lemmings through a number of obstacles to a designated exit. In any given level, the player must save a specified number or percentage of the lemmings in order to advance. To this end, the player must decide how to assign limited quantities of eight different skills to individual lemmings, allowing them to alter the landscape and/or their own behaviour so that the entire group can reach the exit safely.
Lemmings was one of the best-received video games of the early 1990s. It was the second-highest-rated game in the history of Amstrad Action, and was considered the eighth-greatest game of all time by Next Generation in 1996. Lemmings is also one of the most widely ported video games, and is estimated to have sold around 20 million copies between its various ports. The popularity of the game also led to the creation of sequels, remakes and spin-offs, and has also inspired similar games. Despite its success, Lemmings lost considerable popularity by the late 1990s, which was attributed in part to the slow pace of gameplay compared to video games of later generations.[13][14]
Lemmings is divided into a number of levels, grouped into four difficulty categories.[15] Each level begins with one or more trap doors opening from above, releasing a steady line of lemmings who all follow each other.[16] Levels include a variety of obstacles that prevent lemmings from reaching the exit, such as large drops, booby traps and pools of lava.[17]
The goal of each level is to guide at least a portion of the green-haired, blue-robed lemmings from the entrance to the exit by clearing or creating a safe passage through the landscape for the lemmings to use.[18][19] Unless assigned a special task, each lemming will walk in one direction ignoring any other lemming in its way (except Blockers), falling off any edges and turning around if it hits an obstacle it cannot pass.[20] A lemming can die in a number of ways: falling from too great a height, drowning or falling into lava, falling off the bottom edge of the screen, being caught in a trap or fire, or being assigned the Bomber skill. Every level has a time limit; if the timer expires, the level ends and the player is evaluated on the number of lemmings rescued.
To successfully complete the level, the player must assign specific skills to certain lemmings. Which skills and how many uses of each are available to the player varies from level to level, and the player must assign the skills carefully to successfully guide the lemmings.[19] There are eight skills that can be assigned:[18] Climbers climb vertically though fall down if they hit an overhang. Floaters use a parachute to fall safely from heights. Bombers explode after a five-second timer, destroying themselves and any destructible landscape in close proximity, though not damaging other lemmings or traps. Blockers stand still and prevent other lemmings from passing; lemmings that hit a Blocker simply reverse direction. Builders build a stairway of 12 steps. Bashers, Miners and Diggers tunnel horizontally, diagonally downwards or directly downwards respectively, but cannot break through steel barriers.[15]
While the player is able to pause the game to inspect the level and status of the lemmings, skills can only be assigned in real-time. Lemmings are initially released at a rate predetermined by the level (from 1 to 99). The player can increase the rate as desired to a maximum of 99, and later decrease it down to, but not lower than, the initial rate. The player also has the option to "nuke" all the remaining lemmings on the screen, converting them to Bombers.[15] This option can be used to abort a level when in a no-win situation, remove any Blockers that remain after the remaining lemmings have been rescued, or end a level quickly once the required percentage of saved lemmings has been reached.[18]
The original Lemmings also has 20 two-player levels. This took advantage of the Amiga's ability to support two mice simultaneously, and the Atari's ability to support a mouse and a joystick simultaneously.[22] Each player is presented with their own view of the same map (on a vertically split screen), can only give orders to their own lemmings (green or blue), and has their own base. The goal is to get more lemmings (regardless of colour) into one's own base than the other player. Gameplay cycles through the 20 levels until neither player gets any lemmings home.[18]
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