Conspiracies within conspiracies! Theories within theories! SU does a great job of foreshadowing without letting the audience know it's foreshadowing. Whether it was subtly showing Garnet was a fusion, or having Ronald spew what sounded like nonsense about some Great Diamond Authority, SU definitely drops massive hints about future plot points in the most subtle of ways. Considering there was a whole episode dedicated to the Unfamiliar Familiar series, could this books plot hold more about the keys to the future of SU than we thought?