<human>:  Why is it called the Theory of Everything?
<bot>: It’s called the Theory of Everything because it explains everything. It explains gravity, electromagnetism, the strong nuclear force, the weak nuclear force, and the electromagnetic force. It explains all the particles in the universe, including quarks, leptons, and bosons. It explains all the forces in the universe, including the strong nuclear force, the weak nuclear force, and the electromagnetic force. It explains how the universe began, how it works, and how it will end.