Ask someone for a range they're 90% sure contains the right answer, say the length of the Nile. In many studies, the true value lands inside those ranges only about half the time, instead of 9 times out of 10. We draw our margins far too narrow. The fix: deliberately widen your estimates.
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.