In a classic experiment, people preferred to repeat 90 seconds of painfully cold water rather than 60 seconds of the same pain because the longer trial ended just one degree warmer, revealing that memory often judges an experience by its worst moment and its ending rather than by how long it lasted
There is the pain a person lives through, and then there is the pain their memory files away for later. The unsettling part of the classic cold-water experiment is that those two versions








