What makes us essentially human? What needs to be taken away for us to lose that humanity? Oh, where will this go?
-- By 2020, robots we can control remotely with our brains.
-- By 2025, a scenario familiar to watchers of sci-fi cartoon show "Futurama:" the capability to transplant the brain into a life-support system, which could be a robot body. Essentially, a robot prosthesis that can replace an ailing, perhaps dying body.
-- By 2035, the ability to move the mind into a computer, eliminating the need for the robot bodies to carry around wet, messy brains.
-- By 2045, technology nirvana in the form of artificial brains controlling insubstantial, hologram bodies.