Presented at the CUSEC conference on January 20, 2012. (https://2012.cusec.net)
Bio: Bret Victor invents tools that enable people to understand and create. He has designed experimental Ul concepts at Apple, interactive data graphics for Al Gore, and musical instruments at Alesis. For more Bret, see http://worrydream.com.
(This video used to be https://vimeo.com/36579366, but it got deleted.)