You are an I-sayer as a particular person in a world of persons who are each and all I-sayers, I-doers, and although each one and its others are deeply connected so that the things that come to their attention are not unique but shift and slide, multiply and divide between the, the "I's are completely sealed off from each other, so that each can doubt if that of his other even exists - as if the nature of such 'I's necessarily includes existence. Out of a practically innumerable host of such existing 'I's one of them is you and remains you until you, and it, die and cease to exist. And new 'I's continue to arise into existence, and how can you know whether one of these future ones without any knowledge or memory of you might happen to illuminate exactly the same void as your "i" currently fills. In other terms, if your particularity represent a certain choice over the set of all existing 'I's then its extinction goes to a void which is just as particular and which might or might not happen to be filled or negated by a new 'I', whose very wonder at its own unique and contingent being is the very same wondering as yours, at this moment. This kind of question may be inadmissible, but no available understanding of language and of the nature of reality is up to the task of proving that inadmissibility. (Instead it is assumed and the theories or lifeways puffed up to that level, like Dr Johnson's famous kicking of a stone.)