[prestonh]

It seems like the tool was mainly invented to deal with the issue of hidden state in notebooks, but I don't honestly see what the big deal is. Jupyter notebook is a tool with hidden state being a gotcha that you can learn how to deal with extremely quickly. I've been a Jupyter notebook for several years so haven't had this problem often in recent memory, but I've led workshops where we teach users how to use the notebook. Inevitably hidden state issues come up, but students very quickly learn that restarting the kernel is a necessary part of the workflow and figure out when they need to do it.