l write about the animation I watched last Friday.
After I saw it, I thought things you think are self-evidence are not always true.
Everyone in this town was realists and they didn't admit the boy who believed the fish was mermaid. They thought their idea was right and the boy was wrong.However, the fish became mermaid in the end, because the boy had been believing the fish was mermaid.
I'm not sure they could really see mermaid, but they began to understand there exists many different ideas and admit him.
I think the author wanted to tell us is that we shouldn't place absolute trust in our own ideas and shouldn't force our ideas on others.