What about 00-09?
You may be wondering why we started our areas at
10-19 and not
00-09, and our categories at
11 rather than
We reserve these for the system
Sometimes you want to keep information about the system, in the system. I call this ‘Management & Meta’.Meta basically means ‘self-referential’. It’s about itself. Get it? If not, don’t stress.
00-09 is about the system itself
I always reserve these numbers for a special area called
00-09 Management & Meta. Inevitably I want to store some information in my Johnny.Decimal system about my Johnny.Decimal system. That goes here.
For example, I have to save text notes in a folder on my disk. That folder has to live somewhere, and it lives in a category in
One of the text notes I keep at work serves as a quick-reference index to my Johnny.Decimal system. It’s called
10, 20, 30 … 90 are about those categories
In the example we’ve been using,
Administration but our first category was
21 Company registration. What happened to
We reserve these numbers for ‘management & meta’ information about the category. Although I hardly ever use them, it’s rare that I have more than nine categories in an area. I don’t miss the wasted number, but I always appreciate it when I need it.
Confused? Don’t worry
If you want to use the zeros, use them. It doesn’t matter.