[lacker]

Some of these notebooks are years old. The datasets they have in memory aren't saved anywhere else.

That sounds dangerous to me. If your computer crashes or you introduce a bug to your notebook, you could lose all that data. Personally, I prefer my notebooks to be reproducible at any point.

[yunohn]

Exactly, or at the very least, pickle/serialise/export/whatever the models so that the computer can survive a reboot.

[legerdemain]

These are usually small aggregates and summaries, so I just display them in notebook output. It does make it take a bit longer to scroll through the notebook to find something, but that's what being disciplined with organization is for.

[KMag]

Sorry, I'm not sure I'm following your argument. Are you saying your notebooks hold state that's easily reconstitutable, and so it's not actually such a big deal to regenerate your "precious state"?

[legerdemain]

No worries, apology accepted! You misunderstood what I wrote: parts of my state are small enough for me to print() them in a cell and use the output as reference.