Level III multiverse

The Level III multiverse brings in quantum mechanics. This is the MWI or Many-Worlds interpretation of quantum mechanics. This was a proposal made by Hugh Everett III. It must first be understood, that, in quantum mechanics, certain observations, exist in a range of different potential or possible observations. This is known as the wave function of a quantum system. Each of these observations in quantum mechanics has a corresponding probability (of it being observed to have actually occurred). We say that the wave function is in a superposition (undetermined state) of several different potential outcomes (known as eigenstates in quantum mechanics). When the wave function, upon observation, is reduced to a single eigenstate, we call this the wave function collapse. Thus, the MWI, denies the actuality that the wave function collapse even happens. In the Many-Worlds interpretation, each of these possible observations, corresponds to a different universe! In the Level III multiverse, all possible histories, futures and realities are real. Anything that could have happened, and did not, did happen, in another universe. A good way to visualize the many-worlds interpretation is by throwing a die. There are 6 possible outcomes, you role a 1, 2, 3, 4, 5 or a 6. One of these will be observed in our physical universe. However, if the many-world's interpretation is correct, than, each of these possible outcomes, corresponds to a different universe, that exists on a quantum branch, in infinite dimensional space.