how can our brains remember that we forgot something, but it can’t remember what we forgot?

Question

how can our brains remember that we forgot something, but it can’t remember what we forgot?

In: Other

Answer 1

We can think of the brain as a library, with an index and all the books. Sometimes you see an entry on the index but cant find it on the library, then later when searching for something unrelated find the original thing you wanted.