I think that Charly's experience was mostly positive because he got to experience what he wanted to. It was his decision and he got to become smart like he wanted to. He got to see the world through different eyes and got to become what he wanted. He got to be a completely different man than he was and he saw when people were making fun of people because of their condition. He stood up for the kid and helped him out since he was once like that. He knew people treated him like that at times and made him upset. He also had new feelings and learned about actions that adults have to or do make. He also got to learn feelings of others and what they feel about him or others.He was able to help the scientist with their work and help them with the operation. He got new friends and learned new things about the world he never knew.Even though he knew it was temporary he liked being able to become different and learning new things. And even though he returned to what he was like before but he at least got to live his dream. Thats why I think Charly Gordon had a mostly positive experience.