In 2007, David Eagleman had volunteers fall backward from a height of 31 meters into a net. Afterwards, they judged their own fall to have lasted 36% longer than other people's. To test whether their perception actually sped up, they wore a wrist display flashing digits too fast to read. Mid-fall, they read them no better. The authors suggest fear instead lays down denser memories, which seem longer in hindsight.
Remembering is not replaying a recording — it is rebuilding. Each time you recall a memory, it becomes temporarily malleable and can be altered before being stored again. That is why two people can sincerely remember the same event… differently.
In 2003, Johnson and Goldstein compared European countries. Where you must tick a box to become a donor, consent rates ranged from 4% to 28%. Where you're a donor by default unless you opt out, they topped 85%. People aren't more generous on one side; most simply stick with whatever option was chosen for them.