Phone Buttons
Get a free book from Audible: http://www.audible.com/numberphile
Why are phone buttons laid out as they are? Sarah Wiseman discusses.
Sarah tweets at: https://twitter.com/oopsohno
This is Numberphile. We mainly post videos about mathematics and just numbers in general.
Get a free book from Audible: http://www.audible.com/numberphile
Why are phone buttons laid out as they are? Sarah Wiseman discusses.
Sarah tweets at: https://twitter.com/oopsohno