You win if you draw a red jelly bean. Small bowl: 1 red out of 10. Large bowl: 7 reds out of 100. In Denes-Raj and Epstein's experiment, many people picked the large bowl while admitting their odds were worse. The number of winning beans speaks louder to intuition than the percentage. It's called denominator neglect.
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.