<html><head><style type="text/css"></style></head><body><div style="font-family:times new roman,new york,times,serif;font-size:12pt">The dynamics of this is pretty well modeled by using the "forest fire" particle simulation. Basically about 80% of the human population needs to feel that others around have already come to a conclusion before they will conclude. This inserts huge delays on ideas (sometimes 30 to over 100 years).<br><br>The forest fire particle simulation (originally done in Starlogo) allows you to choose the ratio of forest to clearings and start a fire to see if it propagates. One of these models requires at least 66% connectivity before the fire will spread.<br><br>Cheers,<br><br>Alan<br><div><br></div><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;"><br><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;"><font face="Tahoma" size="2"><hr size="1"><b><span style="font-weight: bold;">From:</span></b> Carlos Rabassa <carnen@mac.com><br><b><span style="font-weight: bold;">To:</span></b> squeakland.org mailing list <squeakland@squeakland.org>; america-latina@squeakland.org; Maho 2010 <maho@realness.org>; IAEP SugarLabs <iaep@lists.sugarlabs.org>; voluntarios y administradores OLPC para usuarios docentes <olpc-sur@lists.laptop.org>; olpc bolivia <olpc-bolivia@lists.laptop.org>; OLPC Puno <olpcpuno@gmail.com><br><b><span style="font-weight: bold;">Sent:</span></b> Sun, February 6, 2011 12:42:28 AM<br><b><span style="font-weight: bold;">Subject:</span></b> [IAEP] Etoys Particles/Partículas Challenge/Desafío<br></font><br> <font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;"><font class="Apple-style-span" color="#ff1314">English text follows the Spanish text</font></span></font><div><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;"><br></span></font></div><div><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;">Acabamos de leer este párrafo en un artículo de diario sobre por qué algunos mensajes de Twitter se propagan mucho y otros no:</span></font><div><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;"><br></span></font></div><blockquote class="webkit-indent-blockquote" style="margin: 0pt 0pt 0pt 40px; border: medium none; padding: 0px;"><div><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;">>> Resulta que la forma como se difunde la información [en los medios sociales] en línea es, frecuentemente, más complicada que transmisión viral.</span></font></div><div><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;">Transmisión viral es el caso, por ejemplo, en que una persona envía un enlace a un video en YouTube directamente a otra persona. Mientras que lo que sucede con temas políticos, la gente usualmente espera hasta que cierto número de amigos o fuentes de confianza han promovido la idea, antes de promulgarla ellos. <<</span></font></div></blockquote><div><div><div><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;"><br></span></font></div><div><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;">El artículo completo:</span></font></div><div><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;"><br></span></font></div><div><div style="margin: 0px; font: 12px Times;"><font class="Apple-style-span" face="Arial" size="5"><span class="Apple-style-span" style="font-size: 18px;"><span><a target="_blank" href="http://www.nytimes.com/2011/02/06/business/06stream.html?emc=tnt&tntemail0=y">http://www.nytimes.com/2011/02/06/business/06stream.html?emc=tnt&tntemail0=y</a></span></span></font></div></div><div><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;"><br></span></font></div><div><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;">Sentimos podría ser un tema muy interesante para explicar con Etoys, usando el objeto "Partículas".</span></font></div><div><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;"><br></span></font></div><div><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;">"Partículas" se encuentra en la página "básico" del "Catálogo de Objetos" en "Provisiones".</span></font></div><div><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;"><br></span></font></div><div> <div style="word-wrap: break-word;"><div><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;">Carlos Rabassa</span></font></div><div><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;">Voluntario</span></font></div><div><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;">Red de Apoyo al Plan Ceibal</span></font></div><div><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;">Montevideo, Uruguay</span></font></div><div><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;"><br></span></font></div><div><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;"><br></span></font></div></div><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;"><span class="Apple-style-span" style="font-size: medium;"><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;"><span class="Apple-style-span" style="font-size: medium;"><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;"><font class="Apple-style-span" color="#ff1314">English text:</font></span></font></span><div style="font-size: medium;"><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;"><br></span></font></div><div style="font-size: medium;"><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;">We just read this paragraph in a newspaper article on why some Twitter posts catch on and some don´t:</span></font><div><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;"><br></span></font></div><blockquote class="webkit-indent-blockquote" style="margin: 0px 0px 0px 40px; border-style: none; padding: 0px;"><div><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;">>> </span></font><span class="Apple-style-span" style="font-family: Times; font-size: 12px;"><font class="Apple-style-span" face="Arial" size="5"><span class="Apple-style-span" style="font-size: 18px;">It turns out that the way information spreads online is often more complicated than viral transmission, in which one person passes a link to, say, a YouTube v</span></font></span><span class="Apple-style-span" style="font-family: Times; font-size: 12px;"><font class="Apple-style-span" face="Arial" size="5"><span class="Apple-style-span" style="font-size: 18px;">ideo directly to another person. As with political topics, people often wait until a number of friends or trusted sources have promoted an idea before promulgating it themselves. </span></font></span><span class="Apple-style-span" style="font-size: 18px;"><<</span></div></blockquote><div><div><div><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;"><br></span></font></div><div><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;">The complete article:</span></font></div><div><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;"><br></span></font></div><div><div style="margin: 0px; font: 12px Times;"><font class="Apple-style-span" face="Arial" size="5"><span class="Apple-style-span" style="font-size: 18px;"><a rel="nofollow" target="_blank" href="http://www.nytimes.com/2011/02/06/business/06stream.html?emc=tnt&tntemail0=y">http://www.nytimes.com/2011/02/06/business/06stream.html?emc=tnt&tntemail0=y</a></span></font></div></div><div><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;"><br></span></font></div><div><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;">We feel it could be a very interesting subject to explain with Etoys, using the "Particles" object.</span></font></div><div><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;"><br></span></font></div><div><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;">"Partícles" is located in the "basic" page of the "Objects Catalog" in "Supplies".</span></font></div><div><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;"><br></span></font></div><div><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;"><br></span></font></div><div><div style="word-wrap: break-word;"><div><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;">Carlos Rabassa</span></font></div><div><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;">Volunteer</span></font></div><div><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;">Plan Ceibal Support Network</span></font></div><div><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;">Montevideo, Uruguay</span></font></div></div></div></div></div></div></span></font></span></span></font></div></div></div></div></div></div> </div><br> </body></html>