When I was a child parents taught me how to count.
They did not say me "what is a number".
They did not explain me "what profit I would gain from knowing numbers".
They just taught me to count things.
We live under ocean of facts. Concepts are the only tools to deal with facts.
But list of powerful concepts is short (one hundred?).
And in every current moment the list of person who can add something new into the list is even shorter (a dozen?)
So some new and powerful ideas for your attention.