The "theory of everything" is a theoretical framework in physics that aims to unify all fundamental forces and particles in the universe into a single, comprehensive model. It seeks to connect the two main pillars of modern physics: general relativity, which describes gravity, and quantum mechanics, which explains the behavior of subatomic particles. Scientists believe that a successful theory of everything would provide deeper insights into the workings of the universe, potentially explaining phenomena like black holes and dark matter. Various approaches, such as string theory and loop quantum gravity, are being explored to achieve this unification.