A simple bit-shift operation can generate amazing random strings of numbers. Dr Mike Pound explains then codes it in Python. If you want to know more about how XOR works: https://www.youtube.com/watch?v=VPw9vPN-3ac https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com/