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Outnumbered is a journey to the dark side of mathematics, from how it dictates our social media activities to our travel routes. Algorithms are running our society, and as Facebook's Cambridge Analytica scandal has revealed, we don't even realize how our data has been used against us. David Sumpter investigates whether mathematics is crossing dangerous lines when it comes to what we can make decisions about. Our increasing reliance on technology and the internet has opened a window for mathematicians and data researchers to gaze through into our lives. Using the data they are constantly collecting about where we travel, where we shop, what we buy, and what interests us, they can begin to predict our daily habits, and increasingly we are relinquishing our decision-making to algorithms.



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