The Quantum Efficiency Principle: A Variational Framework for Efficiency in Physics

The Quantum Efficiency Principle (QEP) proposes that physical systems evolve by extremising a functional balancing entropy, energy, and complexity. In the appropriate limits it recovers thermodynamics, quantum mechanics, and general relativity, while also predicting quantum collapse thresholds, the speed of light as a complexity horizon, and MOND-like corrections to galactic dynamics. QEP is presented as a unification framework that is testable, falsifiable, and conceptually economical.