The following image shows when you should start a new note for your slipbox. And what to do if there are similar notes:
Start by finding similar notes, if there aren’t any make a new note. If there are notes, but not related, make a new note.
Notes related to the topic exist, if these do not fit the idea create a new note but adhere to the keywords.
#notes
A Zettelkasten is said to be a second brain. Through the linking of notes the system may surprise you in insightful ways.
The word can be split into two ‘zettel’ and ‘kasten’. Zettel meaning a note and kasten simply box. So, a zettelkasten is a box of ideas. But what makes this box special/useful?
Rather than writing notes down in categorized notebooks the notes should have a free-flowing category. This Medium article has some nice visualizations of this. Where the author starts with the ’normal’ system of notebooks, a set of dots (representing the notes) cast in concrete.