Infinite data structures sound impossible. Professor Graham Hutton shows how laziness can win them over. EXTRA BITS: https://www.youtube.com/watch?v=yCyBdeJmHM0 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/