Babies And Throat Ulcers At What Age Should You Start Teaching Babies Right From Wrong?

At what age should you start teaching babies right from wrong? - babies and throat ulcers

My baby is 10 months and my friend has a baby the same age. Babies can tell right from wrong. You may believe that their children's hands or buttocks. You do not want to go, but I'm just curious if the baby does not even know what should or should not do and start teaching in 10 months?>?