Why is the code of ethics important to children's services?

Ethics are important in all human interactions, but especially those between adults and children. Society and the law assumes that when two adults interact, as long as both freely consent to the interaction, they do so as equals. A child however, besides being usually smaller compared to the adult, also does not have the same emotional, intellectual and moral development as an adult, generally speaking, and so cannot cannot interact with the adult as an equal and therefore requires special protections, such as a code of ethics and special laws pertaining specifically to minors.