Through this animation I believe Mr. Tezuka showed us that imagination is something that is limitless and that only us humans have access to it. During the animation the boy is locked up for continuing to use his imagination even when told not to. I think Mr. Tezuka was trying to tell us that society was and still is trying to control how we think and is trying to prevent us from thinking outside the box. After going to his official website it said that children all around Japan were being produced with no indivisualism. I think that Mr. Tezuaka hated this and he wanted to show us that we have to keep a strong will to not be regulated by the goverment. Overall I think he wanted to show us how regulated the society that we live in is.