The brain has a natural tendency to associate, make links, connections, the brain is not hierarchical, it does not store information in single 'places'
the brain likes making connections, associations.

You can link any thought, to any thought.
And any thought can be the hub of activity
it is a non linear way of connecting information.
Connect information associatively rather than hierarchically

At first it seems daunting. Imagine being able to organize 100 of your bookmarks in a useful way. The brain is a tool that allows you to do that

Common questions I get:
Don't you spend most of your time planning and organizing?;
The list of todo's looks daunting;
Aren't you afraid it will get lost in your brain