# Ask yourself: why am I saving this thing?

> A mental trick to help you if you can't decide where a thing should go.

In [re-doing the D85 structure](/22.00.0064/) I realised that the hardest part is, perhaps unsurprisingly, in the creation of your areas and categories.

This is the bit where you form the shape of your system: you decide how to categorise your life or project or whatever.

So here's an example. On a [recent episode of Cortex](https://www.relay.fm/cortex/154), CGP Grey talks about his very granular use of to-dos. (The bit is near the end.)

I found this interesting enough to want to save it. So: **where?**

This sort of _nebulous piece of data_ is one of the hardest. I realised the key is to ask yourself the question:

**Why am I saving it? What is its purpose?**

In this case, the answer is that this might influence the Johnny.Decimal system in some way in the future. It might change my thinking; change how I recommend people do things.

This led me to the realisation that `D85` needs an area for this: for the _thinking about Johnny.Decimal as an idea_.

That's a long area title, and thanks to Lucy I now appreciate the value of an interesting title. So I ended up with:

<p>
  <code style="font-size: 3rem;">30-39 The institute 🧬</code>
</p>

_(Yes, I've started to use emoji in my titles. Something else I got from Lucy [building her system](/jdu/workshop). It's surprisingly useful in anchoring concepts in your brain.)_

As soon as this idea came to me, a bunch of other stuff dropped in to place.

Where do I store my sample Johnny.Decimal systems, the stuff I use as examples and screenshots? In the institute.

Items related to solving the edge-cases like [the academic problem](https://forum.johnnydecimal.com/t/the-academic-problem-mega-thread-to-come-up-with-a-solution/1492) or [the freelancer problem](/22.00.0016/)? The institute.

Academic papers that I find? Institute. It's perfect.

And I'm not sure if it would have occurred to me if I hadn't asked: **why am I saving it? what is its purpose?**