Okay as a tool to create tutorials or lessons this is pretty cool. It was not clear from the title and home page that this is the target but looking at the demo

Okay as a tool to create tutorials or lessons this is pretty cool. It was not clear from the title and home page that this is the target but looking at the demo video makes this clear. As a tool to actually document code however as the title suggests this would be a terrible, terrible idea. No code comments or commit messages except a link to a video hosted on a website that may become broken or simply shut down at any time in the future? No thanks. What if I take 2 hours to write 10 lines of code, do I expect people who come after me to watch a 2 hour long video to understand what I was doing? It would also make public a mental process that may be messy, and maybe cause a similar effect to being watched over your shoulder while you code. Not to mention the usual problems of video like low consumption speed, linearity, and non-searchability.