November-December 2003 The title of the Institute of Medicine’s report on medical error, To Err is Human: Building a Safer Health System, is derived from Alexander Pope’s “Essay on Criticism” (1711): “To err is human; to forgive, divine” (l. 525).1 Given how familiar this proverb is in its entirety, it is striking that the IOM report itself contains no reference to forgiveness, divine or otherw...