Illegal Numbers

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...

Brown papers auction: http://bit.ly/brownpapers

Mona Lisa in binary: http://bit.ly/15D4T7M

This video features Dr James Grime - https://twitter.com/jamesgrime

The hex should be: 4E554D, etc... We missed a digit copying it out!