A theory of everything (TOE) is a hypothetical, singular, all-encompassing, coherent theoretical framework of physics that fully explains and links together all aspects of the universe. Finding a theory of everything is one of the major unsolved problems in physics.

A TOE would unify all the fundamental interactions of nature: gravitation, the strong interaction, the weak interaction, and electromagnetism. Because the weak interaction can transform elementary particles from one kind into another, the theory of everything should also predict all the various different kinds of particles possible.

Some of the most well-known TOE proposals include:

It is important to note that no TOE has yet been fully developed or verified. However, the search for a TOE is one of the most important and exciting areas of research in physics today. A TOE would be a major breakthrough in our understanding of the universe and could lead to new technologies and insights into the fundamental nature of reality.

There is no single scientific theory that is universally considered to be the most inclusive. However, some theories that are often cited as being inclusive include:

These are just a few examples of scientific theories that are often considered to be inclusive. Ultimately, the most inclusive scientific theory is one that is open to all people, regardless of their background or beliefs.