Order from Chaos (the math bit)

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...

See part one: http://youtu.be/CwIAfkuXc5A

Featuring Simon Pampena - https://twitter.com/mathemaniac

Erdős--Szekeres Theorem: http://bit.ly/1k8fv15