Question

how is that our brain remembers that it forgot something that it does not remember now ??​

Answer 1

Explanation:

The reason, he thinks, is that the brain doesn't know straight away what is important and what isn't, so it tries to remember as much as possible at first, but gradually forgets most things. “Forgetting serves as a filter,” Hardt said. “It filters out the stuff that the brain deems unimportant.”