I submit that if you would make an exact clone of me and subject both of us to the exact same condition that we would behave differently.
I suspect it is because our two brains (while identical physically) would have differing quantum states such that the superstructure of active connections would be impossible to measure perfectly - and therefore impossible to duplicate perfectly.
I suspect it is because our two brains (while identical physically) would have differing quantum states such that the superstructure of active connections would be impossible to measure perfectly - and therefore impossible to duplicate perfectly.