Why do people hate mathematics?
Alex Bellos discusses how the Incans used knots in string (Quipu) to record numbers.Check out Brilliant (get 20% off their premium service): https://brillian...
Featuring Professor Edward Frenkel, from the University of California, Berkeley. Author of Love & Math. http://amzn.to/1g6XP6j
With thanks to http://www.audible.com/numberphile
