Without regular interaction—the holding, hugging, talking, the explanations and demonstrations given to most young children—she had not learned to walk or to speak, to eat or to interact, to play or even to understand the world around her. From a sociological point of view, Danielle had not been socialized.
a lot of the daily interactions that people brought up and socialized normally are taken for granted and not really thought about, yet this example shows how necessary they are for human survival.