Are there children who cannot be saved?

Possibly, but we as a society still need to try our hardest. Jack, in the manuscript, will never lead any kind of productive life. There is no place for him in regular foster care. How should society warehouse a child who is amoral and without any feelings?

Sometimes the needs of a community outweigh the needs of individuals in that community. When there are children who are predators people must be protected. It is a sad thing when a child loses freedoms and his behavior isn't his fault. It's sad for adults, too.