Potential identities

They all live with one or a few certainties, ignorant, consciously or not, I do not know in most cases, of the many other potentialities, which, together with their certainties, comprise the whole. Are not potentialities, certainties with all the same parts except for reality, and is not reality so dubious a thing that we might say potentialities are, in fact, certainties? And so the certain people live sixteenths of lives, or much smaller fractions, without filling up with all the rest other than their history and conditioning.