To have to run a spreadsheet or check the station every time you get a new cooking or furniture recipe or simply waste them by mass learning everything which is pretty common too just seems lazy
Every other game I have played has a simple blocker that stops you from re-learning the same recipe
As a player, I want recipe/schematics to indicate visually my collection state (i.e., have, do not have), so I know if I should acquire and salvage them.
As a player, I want recipe/schematics to provide error messaging, “You already know this recipe”, so I can gracefully recover from trying to learn something I already know.
As a player, I want this convention of “known/unknown” to be carried across the user interface, so any presentation of a recipe/schematic immediately informs me of my collection status.