Although the basic program that controls brain development is contained in our chromosomes, environmental factors can also influence this process. Why do you think the process of development is not...

Although the basic program that controls brain development is contained in our chromosomes, environmental factors can also influence this process. Why do you think the process of development is not completely automatic and programmed? What is the point of letting the environment influence it? Would we be better off if development was simply automatic, or does such flexibility have some potential benefits?