Consider two boxes, each filled with wires.BowieZ said:But that doesn't answer the question of why you are *you*. Yes, humans develop identities. But why did the identity RagnarokX developed come to be experienced by you -- or, why can't I experience your life? It's not about humans having identities, because if none of us were conscious of ourselves, every human would be another statistic. It's that we are conscious of our own identity, that makes our own life not just another statistic... objective nature has become subjective... somehow?
HOW?
For the most part, Box A is highly similar to Box B. Both boxes have wires dedicated to the detection and recording of stimuli. Each box also has special clumps of wires than enable it to be aware of these stimuli and the recordings. They sort the recordings and act selectively in the face of different stimuli. Due to the interactions between the constraints of the "blueprints", varying "recordings", the nests of "wires" being slightly different, Box A and Box B are different. Different also is their "point of view", their detection wires may function the same, but they are local, they can only operate for the box in which they sit. Box A's wires cannot receive Box B's stimulus. The recordings they make are local too, and will likely be much different from recordings in the other box.
Box A perceives itself to be Box A because its wires enable it to do so, and the quirks of the wires help create a synergy not quite the same as the synergies of the other boxes. If one could enable Box A and Box B to utilize each other's wires and recordings at the same time as they use their own, perhaps both boxes would still perceive themselves to be separate boxes, but simultaneously that union of wires and recordings of two boxes might create a Box C, a box that perceived itself as whole with two significant organs separated by time and space.
TLDR; Your "wires" were made for you, and they lack the capability of accessing the wires of other "boxes". You have literally no choice in the matter, your wires dictate that you must consider yourself separate from the other boxes (and on many levels you most certainly are).