Reporters who cover science and medicine often make the mistake, early in their careers, of reporting that somebody who has responded to a treatment has been "cured," or that some medical advance or other is a "breakthrough." After we've made a mistake such as that, or more than one, we generally learn that many, many things called "cures" or "breakthroughs" are anything but.
Medicine generally advances in incremental steps, not breakthroughs. And there are many treatments that improve the lives of patients but don't wipe out illness in the way that we might call a cure.
So it's notable that scientists have used the word "cure" twice in recent weeks in regard to treatments for AIDS, something we've generally been told is likely to be, at best, a chronic, manageable disease--but not one that can be cured. Many people with AIDS are now living reasonably healthy lives thanks to a cocktail of...