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The Evolution of Trust

During World War I, peace broke out.

It was Christmas 1914 on the Western Front. Despite strict orders not to chillax with the enemy, British and German soldiers left their trenches, crossed No Man’s Land, and gathered to bury their dead, exchange gifts, and play games.

Meanwhile: it’s 2017, the West has been at peace for decades, and wow, we suck at trust. Surveys show that, over the past forty years, fewer and fewer people say they trust each other. So here’s our puzzle:

Why, even in peacetime, do friends become enemies?
And why, even in wartime, do enemies become friends?
— The Evolution of Trust

Game Theory is an intriguing subject in Mathematics, with various real-life applications. Even though many people have heard about the "Prisoner's Dilemma" - one of the most famous problems in the field, few have delved deeper into the theory. Fortunately, Nicky Case (creator of "Parable of the Polygons") is here to help again, by educating us in a fun, engaging manner. Check out his quick, 30 minutes introduction to Game Theory by clicking the image below, and see if you can understand the questions proposed above any better.