In day to day life interruptions are annoying, but in computing they're essential. James Fowkes explains using an Arduino. 

EXTRA BITS: https://youtu.be/c88s-UvdTok 
Dijkstra's Algorithm: https://youtu.be/GazC3A4OQTE 

Thanks to Nottingham Hackspace

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This video was filmed and edited by Sean Riley.

Computer Science at the University of Nottingham: http://bit.ly/nottscomputer

Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com