The brain loves an excuse to apply a noise cutting heuristic. There was an article a while back about that being a problem for general physicians, where the problem is usually simple, but very very rarely something serious. A doctor can appear good when they get it right 99% of the time, but they might achieve that by defaulting to “you’re fine, here’s some (ibuprofen/antibiotic/antihistamine/etc)”. Thus, their actual job is to identify that 1% with reasonable accuracy.