Because ways of thinking and communicating in any society are learned when we are very young, they seem natural and normal, like our use of the bath room.As adults care for,speak to,and play with their babies, they are at the same time gradually turning a biological being into a social being, who will learn as it grows to share the language he or she absorbs, spoken and unspoken. Babies pick up signals through all their senses, and the emphasis on communicating through different senses is another variable feature from one social group to another. Sounds, for example, which babies may at first seem to use indiscriminately, gradually take on a meaning shared with the surrounding adults, and they soon learn when and where it is appropriate and use flu to apply those sounds to maximum effect. They also learn when some other from communication, such as smiling,laughing or crying, might transmit better what they have in their highly absorbent minds.