Why maps?

When I learn new things, I would care so much about the whole structure of the system, and won’t enjoy the knowledge I am learning when I don’t know where it is

I like maps, maps are the logic, and logic is good for memorization

When you deep into a field, there is definitely a better map is waiting for you, like this Math map and Philosophy map, you got the map, you got the scaffold, and the following learning experience will be much easy in this field

Another reason is when you understand the whole structure, this sense of control like a saving point gave you a choice to continue or stop, it would be much easy to back to a field and restart the learning