I'm kind of confused on how someone can receive a Nobel Prize in Physics if they had only devolped a theory. For example, if someone can show the use of mathematics to resolve a problem in physics (An example might be the unification of the forces) but lacks experimental evidence can they still be considered for a Nobel Prize (of course there are other prizes or whatever, it's just the one that comes to my head). What i mean is if a person resolves a conflict not by developing a radically theory that must be tested (like string theory) but rather just has mathematical evidence for the theory, is it equivalent to experimental evidence? I hope you know what i meant by that. Thanks in Advance!