<snapdata remixID="9295207"><project name="U5L2p3 Disease Spread (answer file)  " app="Snap! 5.4, http://snap.berkeley.edu" version="1"><notes></notes><thumbnail>data:image/png;base64,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struct="atomic" id="2"></list></costumes><sounds><list struct="atomic" id="3"></list></sounds><variables></variables><blocks></blocks><scripts></scripts><sprites><sprite name="Person" idx="1" x="0" y="0" heading="145" scale="1" volume="100" pan="0" rotation="1" draggable="true" hidden="true" costume="1" color="80,80,80,1" pen="tip" id="8"><costumes><list id="9"><item><costume name="sick" center-x="6" center-y="6.5" image="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAwAAAANCAYAAACdKY9CAAAA8ElEQVQoU43Svy4EURTH8e/vmtl5AZVap0BDNFbDzhQaXkGs1gsQHoBWxCOgUSwqoxGNPwmdWuUF1q57ZNzsFDLZ3Fv+7v2cc5JzRcMx1ierWFx9/b/WKDDyDVq2jdcKjuwv9/Rxdse3TsX1ZSgCmCv2SOygqVudDbUv3zuUpZ0FpMexj+sxbFGW5Ec4dqOA51iWrZbYxHIU0M99NdIb0kwUMHuXpfkTYj4O8CxrFedgm1EAXVQduoiTKGDshD2kay/IzY5F5l81uJ0LgM40mc4w2o1IlPRtS9x81F8jwKKNGyxBMhXg8BOfPoheOSr0C+RuSlrAKxc8AAAAAElFTkSuQmCC" id="10"/></item><item><costume name="healthy" center-x="8" center-y="6.75" image="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA4AAAAOCAYAAAAfSC3RAAABAUlEQVQ4T5WSO07DUBBFzzx/EqGYQAkFJWsA07AE1gESbAWQYBthCTR8tgAlBZTgOIKE2G+Q/RQcx3ziV87cc0dv5gqLbyU9JLPHqNkqW2Kf8M0579HlvFRqXJC84pm1hpkzeOOjvz7rVWCQWjzqRosOijKJTOlT9rrpM7Dx46Rm8YVxtOnAzlCRv4d986owWRXBT0/xOVlympNlnAlh8oAx261Aax+FcDjAyEE7UK8ENKY7umkFjnt7biPLnGLmnKNMI+PAIi25Xvy72WKjnhwVKapu4Cd3eLLzK1xAud6T9XerAFRHiglH1xiC2p8tUz57+yC3zcg1tqOxK1XieckXvJFLRgiVQEUAAAAASUVORK5CYII=" id="11"/></item></list></costumes><sounds><list struct="atomic" id="12"></list></sounds><blocks></blocks><variables></variables><scripts><script x="25" y="27"><block s="receiveGo"></block><custom-block s="initialize"></custom-block><block s="show"></block><block s="doRepeat"><block var="population size"/><script><block s="createClone"><l><option>myself</option></l></block></script></block><block s="hide"></block><custom-block s="activateTimer"></custom-block></script><script x="216" y="10"><block s="receiveOnClone"></block><custom-block s="cloneInitialize"></custom-block><block s="doForever"><script><block s="doIf"><block s="reportGreaterThan"><block var="time elapsed"/><l>0</l></block><script><block s="bounceOffEdge"></block><block s="forward"><block var="speed"/></block><block s="doIf"><block s="reportEquals"><block s="reportAttributeOf"><l><option>costume name</option></l><block s="reportGet"><l><option>self</option></l></block></block><l>healthy</l></block><script><block s="doIf"><custom-block s="collideWithSick?"></custom-block><script><block s="doSwitchToCostume"><l>sick</l></block><block s="doChangeVar"><l>infected counter</l><l>1</l></block><block s="doWait"><l>5</l></block><block s="doSwitchToCostume"><l>healthy</l></block><block s="doChangeVar"><l>infected counter</l><l>-1</l></block></script></block></script></block></script></block></script></block></script><comment x="49" y="450.9999999999999" w="332" collapsed="false">5.2.3.4 Some of the simplifying assumptions: &#xD;1) assume population is restricted to a fixed area, in reality population always in flux moving in/out of a locality.  (think international travelers for example)&#xD;2. assume there is no healing or immunity after infection&#xD;3. assume agents continue interacting after infection, in reality the sick will either die or be restricted in movement due to laying in hospital bed etc.).&#xD;</comment><comment x="539" y="125" w="90" collapsed="false">See the hints page linked on the project page for some explanation of these blocks</comment><comment x="53" y="601" w="328" collapsed="false">5.2.3.5 One possible hypothesis:  As POPULATION SIZE increases, the duration of outbreak (TIME ELAPSED) will decrease because the rate of infection increases.  &#xD;&#xD;5.2.3.6 A graph like an exponential decay is expected.</comment><comment x="294" y="525" w="355" collapsed="false">5.2.3.1 What really matters is the population density but as the area where the population lives in the simulation is fixed, we can safely focus on the effects of population size.  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