We must protect the vulnerable from themselves.  It is undeniable that young children form a special and vulnerable group in society. Nowhere is this truer than in the context of sex – so much so that we often need to protect them by placing limitations on what they do sexually. Below a certain minimum age, children are at risk of not having the physiological, biological and, most importantly, emotional development to cope with sex, and with the many possible consequences of having sex, which include teen pregnancy, illegal or legal abortion, childbirth, parental and societal disapproval, unsupported parenthood, legal consequences and increased risk of cervical cancer. [1]  Unfortunately everyone matures a different age. That does not mean that choosing an average, approximate age for consensual sex, such as 16, is arbitrary or wrong. There is no great harm in asking “early developers” to wait for a year or two before they begin to have sex. Especially young people are not always as mature as they believe they are.  [1] BBC News, ‘Cervical cancer link to early sex’, 21 December 2009,  ,