Which Theory Truly Unifies?

Most modern physical theories claim to unify reality but few dare to ask what “unification” truly means.This article introduces the Principle of Logical Unicity (PLU): a theory can only be called unified if all its structures and constants derive from a single generative field, without auxiliary postulates. The text analyzes leading frameworks: Standard Model, General Relativity, String Theory, Loop Quantum Gravity and shows that none of them satisfy this principle. In contrast, it presents Pure Time Theory (PTT) as a monistic approach where all phenomena emerge from a scalar temporal field T_relax, aligning with both historical precedent and future testability. This is not a manifesto. It is a challenge. May it help redefine what unification really demands.