Some context for people reading this and not understanding: this is the web page of Bret Victor. Bret Victor worked at Apple from 2007 to 2010. After working th

Some context for people reading this and not understanding: this is the web page of Bret Victor. Bret Victor worked at Apple from 2007 to 2010. After working there, he gave a series of talks about independent research he did in (for lack of a better word) interactive programming (just search for his name on YouTube/Vimeo). Apple announced a product today, Swift Playground, which is heavily reminiscent of Victor's public work.