Bigger and Bigger?
But in quantum gravity, an effectively endless range of classical spaces is a very dull construct. If this was all there was, how could spacetime observables take on different values depending on experiment in this sector of the multiverse? How could we derive the particle masses and other parameters of the Standard Model? How could we really understand the cosmological horizon? Fortunately, an extension in size is not the only way to extend the realm of possibility.