Ask around and most people answer “two of each kind.” But it was Noah, not Moses, who built the ark. In Erickson and Mattson's 1981 study, about 80% of participants failed to catch the error, even though they knew perfectly well who Noah was. A name that fits the biblical theme slips past without raising an alarm. The “Moses illusion” shows how rarely we check every word.
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.