Randomness underlies events that we encounter every day. From the ups and downs of stock prices to the likelihood of winning at gambling, understanding randomness can help us make sense of our experiences and resolve apparent paradoxes. In the first community lecture of the Santa Fe Institute’s 2018 series, Sid Redner presents an introduction to the famous random walk model, and outlines some of its intriguing consequences. Though their wandering is slow and erratic, the average location of where a r
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