... not to mention, each of them might feel some small measure of empathy for the other!<p>What if one did this regularly? Would battle-hardened cloners become insensitive to &quot;retirement&quot; of their doppelgangers, or as the last survivor of the series of slayings would they start to feel hunted?<p>Really feels at least a few centuries too early to even gauge whether it is possible to substantially capture (let alone reproduce) the state of a brain. Sure would be disappointing if it turned out you could get 90% of the functionality with a ten-state DFA featuring frowning and pooping, but it would make cryonics a whole lot easier. &quot;Just leave me enough brainstem to get home.&quot;