He took all the drugs that were known to change glucose and a bunch of drugs that don't change glucose, and said, "What's the difference in their side effects? Differences in fatigue? In appetite? In urination habits?" All those things conspired to give him a really good predictor.
Eligió las medicinas que sabemos que alteran la glucosa y un puñado de medicinas que no la alteran y dijo: "¿En qué se diferencian los efectos secundarios? ¿Hay diferencias en el cansancio? ¿En el apetito? ¿En los hábitos urinarios?" Todo se confabuló para