It is no use asking me or anyone else how to dig... Better to go and watch a man digging, and then take a spade and try to do it.
Before the child ever gets to school it will have received crucial, almost irrevocable sex education and this will have been taught by the parents, who are not aware of what they are doing.
If you want total security, go to prison. There you're fed, clothed, given medical care and so on. The only thing lacking... is freedom.

