That's perfectly logical. But after two days, people don't remember anything, and after two months, they suddenly have a sharp and unexpected memory. Isn't that strange? :confused:
If you don't strain your brain, it won't work.
The situation seemed not worth the effort.
But when it became clear that they were serious, they got tense and remembered.
Everything is quite logical.
IF THEY WERE CHEATING, THEY WOULD HAVE REMEMBERED IMMEDIATELY!!! ;)
(с) Roger Zelazny