This summarizes it in a nutshell:
Your remember something that you know really happened, but forgot that you experienced it.
You remember something that you think might have happened, but are not really sure that it happened.
You remember something that you think didn't happen, but you try to convince yourself that it did happen.
You remember something that you know didn't happen, but you try to remember who told you about it
You don't remember anything anymore, and you tell yourself, "TO HELL WITH THIS SHIT!"
This summarizes it in a nutshell:
Your remember something that you know really happened, but forgot that you experienced it.
You remember something that you think might have happened, but are not really sure that it happened.
You remember something that you think didn't happen, but you try to convince yourself that it did happen.
You remember something that you know didn't happen, but you try to remember who told you about it
You don't remember anything anymore, and you tell yourself, "TO HELL WITH THIS SHIT!"