Your four-year old runs into the kitchen with his hands over his eyes to ‘steal’ a biscuit. He believes his parents can’t see him since he doesn’t see them. Give a child of four a box of sweets that once open is actually full of crayons. Now ask the child what his/her mother, who is outside the room (and therefore does not know what the true content of the box is), will reply to the question “What is in the box?”. The child will reply “Crayons” because at that age children think their mothers know everything they know. They see everything from their perspective. It will still take some time before others may see and understand the world in a different way from how they do.