Seeing faces in outlets, buildings or toast has a name: pareidolia. In 2020, neuroscientists showed that these illusory faces rapidly activate the brain regions specialized for real faces, and people even read emotions into them. Rhesus monkeys see them too. Better to mistake a cloud for a face than to miss a real one.
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.