> On the other hand, developer productivity in notebook environments is so high that iterating your way to correct code may be faster than trying to plan it all

> On the other hand, developer productivity in notebook environments is so high that iterating your way to correct code may be faster than trying to plan it all out in the beginning. That's not a fair comparison though is it? Those of us who use git, the vast majority of the time we iterate our way to correct code; we don't plan it out at the beginning. It's just that we iterate over the course of a sequence of commits, pausing on each commit to study application behavior. Notebooks users also iterate over a sequence of code evolutions, except mostly without systematic checkpointing and without clearing in-memory state between code changes.