Mind Uploading, Cloning, and Personal Immortality

Arthur C. Clarke's 1956 novel, The City and the Stars, describes city a billion years in the future where the inhabitants are minds downloaded into artificial bodies from files stored in a central computer. They live a thousand years in each body, after which their minds are stored as computer files--there are more uploaded minds than there is space for host bodies--for eventual future downloading. Less than sixty years after Clarke's book, in 2013, a New York conference sponsored by Russian multimillionaire Dmitry Itskov promised that something like this would become reality by 2045. Martine Rothblatt, a tech company CEO, predicted the imminent development of "mindclones" run on "mindware" that would be genuinely alive and conscious. Though arguably only computer simulations of their originals, such electronic mind-copies could, in theory, be replicated indefinitely. Uploaded into any suitable host machine, a person could live, if not forever, far beyond ...