[Silent. Once, she was told that even though it's the brain that uses them, memories are written into the soul, and they can never truly be gone. What's actually most fragile is the mind that loses the ability to recall them.
So unless he finds the problem and does something about it...]
...It's the method you chose to keep what's important to you, without knowing the cause or if it would happen again. [Shrugs] I wouldn't bother with it... But I know why I can't remember.