Objective identity is a matter of discovery and rediscovery. You freely rediscover the object as the same despite differences that are put aside for the knowing. This brings about the wonderful thingness of things, but it does nothing for personal identity even if there are shades of it in awakening each morning and taking a moment to rediscover yourself. It is the assumption of your own identity in time that entitles you to be a witness of the identity of things, although again the gift sometimes goes the other way. What you are is not a factor in experience but the whole of it and since identity is relative to that, is an operation within experience, there can be no identity of the whole presentation. For the same reason, however, you can't grasp that you are the whole of experience because there is nowhere outside of it from which to confirm it. That whole worlds and their enjoyers arise like bubbles in dreams is only suggestive. The only approach to it is in driving meditations on personal identity into a dead end. A 'grown-up' version of saying your name over and over again until it dissolves into meaningless sounds.