I've used paper notebooks as working memories for almost 10 years, until I learned about Evernote, which I had adopted ever since. I quickly became addicted to it. I was storing absolutely everything in it. It was around 1000 or 1300 notes when I began to lose track of things, meaning, information and documents. Search stopped being effective to me and I ended of with too many tags. I decided to adopt the model which uses only 2 notebooks: .Inbox and Archive. Everything else is organized via tagging. Today I have around 3500 notes which are mostly a personal archive. I simply gave up trying to be productive finding things in that ocean of information. So I'm using Google Keep for basic note taking and txt files with long descriptive names in project folders when I need to keep specific notes isolated from all the rest. Nautilus search works fine in finding those files as I type parts of their names.