I watched the video, and immediately realized I would never want to program in that kind of environment. The "literate programming" would get in my way.
It would be like having someone follow me all the time and translate my words in realtime right next to me whenever I speak something. (Actually it's more like me saying something in English AND having to translate after every sentence) It's super distracting because I can't focus on what I'm saying because I lose my train of thought.