255 and Pac-Man

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...

Explaining binary to understand why Pac-Man becomes unplayable after 255 levels.

This video features physicist James Clewett from The University of Nottingham.

Watch his Confessions of a Tetris Addict video at http://www.youtube.com/watch?v=9jA53IkHZJg