REASON14. Molecular machines
As nanotechnology emerges from science fiction into the laboratory, one of the most promising nanotech applications is the molecular motor - an engineered molecule that can do anything from deliver a payload of medicine to a hard-to-reach part of the body, to crawl up your DNA to repair damage. Molecular motors might serve as cellular "prosthetics," attaching to cells to augment their functioning (yes, you can overclock your cells). We're pretty far from having replicators, but we may have ultra-tiny robots that can zoom through our blood and fix us up far more elegantly than the surgeon's knife ever could.
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