Physics provides the most rigorous mental models for business because it deals with fundamental forces, constraints, and scaling behaviour that operate regardless of human intention. Musk's first-principles reasoning is physics applied to cost structures; Feynman's approach to problem-solving is physics applied to thinking.
Scaling and Networks
First Principles and Reasoning
Feynman Lectures on Physics (selected)
Richard Feynman · Speech
Deriving from scratch rather than memorising—the method behind first-principles reasoning.
Surely You're Joking, Mr. Feynman!
Richard Feynman · Book
Problem-solving memoir—curiosity, safe-cracking, and the art of figuring things out.
Entropy and Organisation
The Second Law (thermodynamics primers)
Various · Book
Entropy as organisational decay—systems require energy input to maintain order. Every company experiences this.