In "Flowers for Algernon" by Daniel Keyes, how has Charlie changed since the operation? What has he gained and what has he lost?
After his operation, Charlie quickly gains great intelligence but loses his innocence.
Before his operation, Charlie was mentally handicapped. He worked as a janitor and was semi-illiterate. He took night classes to try to improve his intelligence. He looked up to and respected all the people around him.
After his operation, Charlie attains an exceptionally high IQ and quickly masters multiple languages on top of acquiring advanced mathematical skills and superb reading comprehension. But his intelligence comes at a price. He also can now perceive that the coworkers he thought liked him were actually making fun of him and treating him badly. He also begins to see that the scientists performing the experiment on him, especially Dr. Nemur, aren't the godlike figures he once thought. Dr. Nemur is in some ways intellectually limited, is aging, and wants to make a name for himself before he dies. Charlie begins to be uneasily aware that he was used, just like the the lab mouse Algernon, and that Dr. Nemur might have jumped into the operation too quickly in order to try to secure his reputation.