This was a pretty wild lesson. We started with something simple, that you probably take for granted, and showed how it's more complex than you might think.
Why bother? Why put so much effort into lists?
Because lists are about data and structure, which feed into everything else in writing, and life in general.
In this lesson you've been observing the world, gathering data, and then experimenting with ways in which you can organise, categorise, and communicate that data.
It's big stuff!