To quote Captain Spock in Star Trek VI: The Undiscovered Country: “An ancestor of mine maintained that when you eliminate the impossible, whatever remains, however improbable, must be the truth.” This is basically the theory of Occam’s Razor, the principle that generally recommends that, from among competing hypotheses, selecting the one that makes the fewest new assumptions usually provides the correct one, and that the simplest explanation will be the most plausible until evidence is presented to prove it false.
With that in mind: