Inside our heads, there is a place called the hippocampus. Short-term memories from daily life are stored in the hippocampus. If a memory fragment, such as a phone number or a person, is mentioned repeatedly in a short period of time, the hippocampus will transfer it to the cerebral cortex and become a permanent memory.
If people have the right to make a new choice for the past, I will definitely, definitely, choose to let you become my short-term memory. I don't want to remember you permanently.