Basically a system of organizing where you make your own decimal system.
00 would be a broad category 01 would be a slightly more specific category 01.01 would be a topic within the 01. category
So Johnny Decimal is just a personal version of a dewey decimal system.
There are 10 categories 00-90, for example. Each category can have 9 sub categories 11-19, for example. And each sub category can have 99 folders 21.01-21.99, for example.
I’m thinking:
- 00 Inbox
- 10 Projects
- 20 STEM
- 30
- 40 Personal
- 50
- 60
- 70
- 80
- 90 Meta and Misc
Note: This might not be the exact way to do it, but this was the way I understood it.