Humans, of course, have always strived to tame or even transcend nature through technology, but our efforts up to now look puny and ineffectual compared with what is about to happen. "We're at an inflection point in history," says Joel Garreau, a writer with The Washington Post whose recent book, Radical Evolution, has made him something of a guru in human enhancement circles. "For hundreds of thousands of years our technologies have been aimed outward, at modifying our environment. Now we've got a suite of technologies that are aimed inward, at modifying our minds, metabolisms, personalities and children."
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