Org-mode is strictly speaking the most powerful notebook programming environment out there. I’m also much more excited by R Notebooks as implemented by RStudio

Org-mode is strictly speaking the most powerful notebook programming environment out there. I’m also much more excited by R Notebooks as implemented by RStudio than I am Jupyter. R Notebooks take the same basic approach as org-mode, implementing a smaller set of functionality built around a more mainstream-palatable Markdown format. I don’t like R Notebooks as much as org-mode (why reinvent the wheel!?), but at least the general approach plays nicely with git. On the other hand, the lisp-addled part of me starts to think that the juypyter format being json might actually be a step up from a poorly specified markup format that has to be parsed into data structures. Maybe the real issue is that git is an insufficient revision control system, and that we need revision control systems that can revision data structures, rather than simple text diffing.