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Economics.ipynb
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"source": [
"This is a simulation of an economic marketplace in which there is a *population* of actors, each of which has a level of wealth. On each time step two actors (chosen by an *interaction function*) engage in a transaction that exchanges wealth between them (according to a *transaction function*). The idea is to understand the evolution of the population's wealth over time. I heard about the problem when I visited the Bard College Computer Science Department in 2008. *Update:* In 2017, a version posed by Uri Wilensky [became popular](http://www.decisionsciencenews.com/2017/06/19/counterintuitive-problem-everyone-room-keeps-giving-dollars-random-others-youll-never-guess-happens-next/). We cover his version [below](#Uri-Wilensky-Version).\n",
"\n",
"[](money.png)\n",
"![](money.png)\n",
"\n",
"Why is this interesting? \n",
"- It is an example of using simulation to model the world. The model is simple but captures some aspects of a complex world.\n",