@anon41901724
There’s nothing wrong with dropping things like procedures, data into your system. However a Slip Box is designed to facilitate insights, hence the your-own-words, densely-linking, concept-driven, atomic constraints on the notes.
Simply put, the reason people advise against putting impermanent notes into a Zettel is because impermanent notes (without refactoring into permanent notes of course) are not that useful when reviewing (since they weren’t written with the intention of being reviewed), and thus serves no purpose in helping you discover surprising connections.
Regarding the “definitiveness”, it’s definitely not a requirement. No note is perfect and completely evolved. the point here is to apply the constraints (densely-linking, concept-driven, etc) so that the notes follow the design which has been proven to facilitate insights. A half-formed note can still satisfy the constraints, at least in my opinion. I often write a note as it materializes in my mind and then refactor it later on (days, hours, depends on you really). Therefore, for every given note there’s always a certain point in time where it is guaranteed to be half-formed.
I think you can simply call the system that you put data or procedures as a repository or an inbox or something like that, and Zettel is the system to facilitate insights.