Change,Difference, and Orthodox Truthmaker Theory

Call the thesis that, possibly, there are two times, t₁ and t₂, such that everything that exists at t₂ also exists at t₁, but some things that exist at t₁ do not exist at t₂ Temporal Change. Call the thesis that, possibly, there are two worlds, w and v, such that everything that exists at v also exists at w, but some things that exist at w do not exist at v Modal Difference. I argue that if either Temporal Change or Modal Difference is true, then Orthodox Truthmaker Theory—the theory that every truth requires a necessitating truthmaker—is false.