The evidence is indisputable. The brain of a young child is formed by a combination of physical processes and human interaction and stimulation. The two are totally intertwined. What happens in those early years will make all the difference in the lives of children and their families, their school experience, and their long-term life success. It can significantly influence their ability to be contributing members of society. When looked at globally, it can significantly affect the long-term cost of government services.