Finance is the economy of money.
Productivity is the economy of time.
Simplicity is the economy of mind.
Your intelligence won't grow, accept the limits of brain, and save your mind as much as you can save money or time.
Making things simpler to understand is what the greatest scientists do.
And that's what Richard Feynman did when he kicked helium specialist's ass without being an expert with the Theory of Liquid Helium.