Prosecution of Under 8s?

Further to my post about the children's hearings system Children's Commissioner, Kathleen Marshall, highlights the media calls for lifting the exemption of under 8s from prosecution in the Sunday Herald. The idea behind children's hearings is they attempt to address failings in the child's upbringing when a child commits a crime. Scotland already has one of the youngest ages for criminal responsibility in the world and calls to criminalise children as young as four seems completely crackers.