Will Block has the eccentric air of a seer. Sitting in his second-story corner office, with a hazy, distant view of the mountains, his blue eyes dance electric when talking about the future. His wispy white hair seems to stand on end."Not only will the rate of knowledge accelerate rapidly in many disciplines, but applications of that knowledge will accelerate in areas of health," he says. "This is a stepping stone. The next level will be adult stem cells, gene engineering, and the final application will be getting into the body and building new versions of it - nanomedicine."The 68-year-old …