[piccolbo]

Check survivorship bias. The name refers to deadly scenarios, but what is fundamental to it is a bias in reporting that depends on the outcome of interest. The concept was first hammered out observing that warplanes never got hit in the engines -- well, the ones that made it back at least. Some people thought the areas with the most damage should be protected. Wald thought otherwise and it's him who is remembered to this day. "Moments of whimsy" are like anti-aircraft ammo. They hit everywhere, randomly. But we only report those that are associated with a life change.