Abstract

This paper challenges the Block Universe interpretation of relativity, which denies a physically meaningful “Now.” It introduces the Fixed-Now Growing Worldline (FNGW) model, distinguishing a realized domain W(s) from an unrealized domain F(s), separated by a spacelike boundary N where lightlike interactions become absorptions. Each absorption extends W(s), yielding a Lorentz-coherent but dynamically growing universe. Lorentz symmetry applies only to the realized past (Past-Only Lorentz Equivariance). Supported by non-locality experiments, the model reframes Minkowski’s static geometry as a relativistic process of becoming, where the universe evolves through continuous conversion of potential into actuality.