KnowraTheory of everythingLinked fromLinked fromThe 3 pages that link to Theory of everything, each with the reason it gives.All 3Broader topic 1Narrower topic 2Grand Unified TheoryNarrower topic: Unlike a grand unified theory, it would need to incorporate gravity as well.Hypothetical particle physics modelsNarrower topic: Particle extensions may be ingredients in, but are not by themselves, a complete unification.