So take a look at this talk. You might wanna listen to all the talks this guy says 
he has a TED talk that is also really good.
Since we are currently sharing links to talks, take a look at the awesome talks from Bret Victor. He is one of the most inspiring persons I have seen. 
(his wepage: http://worrydream.com)
other talks of him:
This one is really good too: http://worrydream.com/#!/DrawingDynamicVisualizationsTalk
And this one: http://worrydream.com/#!/StopDrawingDeadFish
(scroll left/right on the page for other talks of him)