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19/03/2018 GMT
A big idea that shapes how we understand our place in the world - from the idea鈥檚 creator.
What are the big ideas shaping our world? This series from the 成人论坛 World Service picks the best ideas from economics to psychology, neuroscience to philosophy, political science to anthropology, and makes them easy to digest.
Each episode of 鈥淭he Big Idea鈥 outlines the important idea through the words of the person who鈥檚 developed the theory. In just nine minutes we offer a weekly chance to listen and feel just a little bit wiser.