But for prosecutors, the strategy has paid off in several cases.
The case was in many ways unprecedented for both prosecutors and parents.
In court, it took two and a half hours for prosecutors to read out the accusations against him.
Even that case caused problems for prosecutors, one of the lawyers said.
For prosecutors, the moment was a frantic low point in the 23-week trial.
The high court's ruling today may have made it impossible for prosecutors to try him.
First, she said, the policy has not caused many problems for prosecutors.
There can be a risk for prosecutors in going too far, legal experts said.
There is one secretary, who also works for other prosecutors.
The result is that it becomes difficult for prosecutors and the police to work effectively.