By ABRAHAM VERGHESENew York Times
THE other day as I walked through a wing of my hospital, it occurred to me that Watson, I.B.M.’s supercomputer, would be more at home here than he was on “Jeopardy!” Perhaps it’s good, I thought, that his next challenge, with the aid of the Columbia University Medical Center and the University of Maryland School of Medicine, will be to learn to diagnose illnesses and treat patients.