Mentioned in: _ How to Take Smart Notes
Tags:

Adding existing ideas and resolving conflicts

It is very common to come up with the idea that is already in the slip-box. Our brain often forgets about the ideas and when we face them again we don't remember that we already added these ideas in past.
If we find the idea in our slip-box and there are small differences between the new and the old versions, it makes sense to add a note describing this difference, sometimes it will lead to important findings.