LLOYD MINOR, MD, is the Carl and Elizabeth Naumann Dean of the Stanford University School of Medicine as well as a professor of otolaryngologyhead and neck surgery and a professor of bioengineering and of neurobiology, by courtesy, at Stanford University. MATTHEW REES is the president of Geonomica, an editorial consulting firm in McLean, Virginia, and a senior fellow at Dartmouth's Tuck School of Business. He has worked as a speechwriter at the White House and a journalist for the Wall Street Journal and the Economist.