was electrified by this news, although I can’t say that I was surprised, given how rapidly the technology was being implemented. Still, the researchers’ accomplishment represented something momentous: It was the first of a new breed of exquisitely precise genetic therapies and seemed to mark the beginning of a new era in medicine—one in which at least some of the more than seven thousand human genetic diseases caused by a defined, single-gene mutation might be cured, thanks to a one-size-fits-all molecular tool.
