In 1953, Henry Molaison had both hippocampi removed to treat his epilepsy and could no longer form new conscious memories. Yet when Brenda Milner had him trace a star seen only in a mirror, he improved day after day, while insisting the task was brand new. The lesson: skills and memories of events rely on separate memory systems.
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.