] In the coming decades, a radical upgrading of our body's
] physical and mental systems, already underway, will use
] nanobots to augment and ultimately replace our organs. We
] already know how to prevent most degenerative disease
] through nutrition and supplementation; this will be a
] bridge to the emerging biotechnology revolution, which in
] turn will be a bridge to the nanotechnology revolution.
] By 2030, reverse-engineering of the human brain will have
] been completed and nonbiological intelligence will merge
] with our biological brains.

KurzweilAI.net