Punishing someone for something they can't remember

Punishing someone for something they can't remember A MAN WHO HAS COMMITTED A TERRIBLE CRIME SUFFERED AMNESIA, AND NOW LIVES AS A KIND PERSON. IS IT ETHICAL TO PUNISH HIM CANNOT REMEMBER THE PAIN THAT HE HAS CAUSED? I MEAN, FROM A PURELY CONSEQUENTIAL STANDPOINT, THE OUTCOMES OF STILL UNRESOLVED. THE MAN MUST BE PUNISHED. BUT THE QUESTION, WHAT IS PUNISHMENT ACTUALLY SUPPOSED TO ACCOMPLISH? IF WE LOOK FROM A PRESENT PERSPECTIVE, WE'RE REALLY JUST TORTURING AN INNOCENT REALLY DONE ANYTHING. THE VICTIM OF IS NOT HEALED, THE OFFENDER DOESN'T LEARN ANY NEW LESSONS, AND OVERALL, SOCIETY DOESN'T GAIN ANYTHING. SIMULTANEOUSLY, CHOOSING TO NOT PUNISH IS STILL UNJUST TO THE VICTIM. HONESTLY, AFTER THINKING OUT THIS THOUGHT EXPERIMENT, I REALLY DON'T KNOW HOW TO ANSWER THIS QUESTION. SO THIS IS COME IN. OFTEN TIMES, MY VIEWERS COME IN WITH ETHICAL THEORIES, AND THEY OFTEN CHANGE MY PERSPECTIVE SO IF YOU LIKE ETHICAL DILEMMAS AND THOUGHT EXPERIMENTS LIKE THIS, TO GIVE ETHICS WITH JASON A FOLLOW.