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Tim Harford: Trial, error and the God complex - YouTube
https://www.youtube.com/watch?v=K5wCfYujRdE
http://www.ted.com Economics writer Tim Harford studies complex systems -- and finds a surprising link among the successful ones: they were built through tri...
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Bobby McFerrin Demonstrates the Power of the Pentatonic Scale - YouTube
https://www.youtube.com/watch?v=ne6tB2KiZuk
Bobby McFerrin demonstrates the power of the pentatonic scale, using audience participation, at the event "Notes & Neurons: In Search of the Common Chorus". ...