You may remember Anil Potti, the cancer researcher at Duke whose biomarker-driven therapies turned out to be so poorly designed as to be useless. (Or you might recall the bizarrely clumsy firm that he hired to try to burnish his online reputation). But what you probably don’t know (I certainly didn’t) was that someone in Potti’s own research group, a third-year med student named Bradford Perez, had figured out that things were going wrong and had reported his concerns to the university. We wouldn’t know