Imagine a hospital ward 100 years from now. Will multi-drug resistant infections be as prominent as they are today? I suspect so, because as antibiotics evolve, so will the infectious diseases they target. It’s an arms race in which both sides have a capacity to learn and adapt. Not so cancer. Cancers can’t learn from each other. But cancer patients can. This profound imbalance in the capacity for learning is an advantage that all cancer patients share. It is our super power. And we barely use it.