>do they also share common memories? Indeed! The way I see it, identity derives from memory. So to the extent (if any) that they share identical memories they

>do they also share common memories? Indeed! The way I see it, identity derives from memory. So to the extent (if any) that they share identical memories they are strictly the same person. Beyond that I would guess there may be some (false) identification with behaviours of the other twin, in a manner redolent of Gazzaniga and Sperry's famous split brain experiment: https://physics.weber.edu/carroll/honors/split_brain.htm https://physics.weber.edu/carroll/honors/split_brain.htm