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We
are currently working on a Java version of Sugarscape for the World Wide
Web. When it is implemented, you will be as a minor deity, able to set Sugarscape's
parameters according to your slightest whim. Until then, you'll have to
settle for our home movies. These depictions of Sugarscape in action are
in the QuickTime
format, which is available for Mac, Windows and Unix.
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Animation
II-2. (3.66
MB)
Agents
(in red) harvest sugar (yellow) from a landscape of renewable resources.
Each period each agent searches its neighborhood for the site richest
is sugar, moves there and harvests the sugar. Sugar grows back at
unit rate. Agents die if they are unable to find enough food to
satisfy their metabolic demands.
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Animation
III-15.
(2.13 MB)
Agents,
identified by their culture, are initially scattered around the
sugarscape. Over time, purposive behavior (sugar harvesting) leads
individual agents to the areas richest in sugar. There, they engage
in sexual reproduction and cultural exchange, producing large, culturally-distinct,
spatially-isolated populations ("tribes"). Eventually,
population pressures mount, the tribes are forced onto less fertile
land, and they begin to interact.
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Animation
IV-2. (552
KB)
Bilateral
exchange in a spatially-distributed population of agents may fail
to produce a Pareto optimal allocation when agents also engage in
production and consumption. This is demonstrated by this movie,
in which aggregate supply and demand schedules are plotted together
with actual average trade price and total trade quantity for exchange
between Sugarscape agents, animated over time.
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Animation
V-3.
(1.66 MB)
Disease
transmission network. Red nodes are sick, blue nodes are healthy,
and lines between nodes indicate that one of the agents has caught
a disease from the other.
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If you
would like a full set of animations to Growing Artificial Societies,
they are available on CD-ROM.
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