Class summary 9/16

* Income inequality
   USA's income per capita was over 75 times richer than poorest in 2009 according to the stats.

* Economy: ability to control goods and sources

* Two important turning point of income changing in the human history: Agricultural Revolution and Industrial Revolution

* Rich people get richer and poor people get poorer because their income difference is getting bigger.

* Why is poverty such a big problem?
   Poverty leads to regional conflicts and starvation leads to cannibalism.

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