Development is the result of the interplay between the growing, changing child and the child’s experiences in the social and physical worlds.84 For example, a child’s genetic makeup may predict healthy growth, but inadequate nutrition in the early years of life will keep this potential from being fulfilled. Conversely, the impact of an organic condition on a young child’s learning and development can be minimized through systematic, individualized intervention. Likewise, a child’s innate temperament—such as a predisposition to be either wary or outgoing—shapes and is shaped by how other children and adults interact with that child. In light of the power of biology and the effects of children’s prior experiences, it is important for early childhood educators to maintain high expectations and employ all their knowledge, ingenuity, and persistence to find ways to help every child succeed.