The ENTIRE point is that the authorities are trained and qualified to determine whether witnesses are credible, and to also gather other evidence. For them sometimes one witness is sufficient and sometimes not. The police and child protection services are not culty enough to have a blanket rule like the Borg has. They have actual thinking ability where it is clear from the testimony so far that your typical Borg elder does not. The elders are not equipped to do such things. They shouldn't even be addressing the issue in-house until guilt is determined by professionals. THEN if the person is guilty, they can DF or determine repentance or whatever they want to do on a religious level.