Its all the court's fault
Helen Clark has said that if the courts had defined what reasonable force was, the smacking bill would not have been needed.
So who is supposed to make clear law here? It's not the judiciary, its the executive for the legislature to pass. The judiciary interprets law. It is not the judiciary's job to define law.
What she should have said that if Parliament defined reasonable force, the courts wouldn't have to. But Helen Clark didn't want to do that. She didn't know how to. Gee, Imagine if Sian Elias was to criticise the executive like Clark criticises the judiciary, she`d be in trouble.