The somatic mechanism of change is little understood. Although astounding advances in molecular biology have opened up new engineering possibilities to "improve" the human species as well as eradicate all kinds of pathological characteristics, such possibilities pose potentially serious dangers. Evolutionary Change explores the biological mechanisms of change in their entirety as they fit into the general dynamics of biological systems and demonstrates the pitfalls of tackling change from too narrow a perspective. Using cancer as an example of certain pathological manifestations of these mechanisms of change, the author posits a challenging new theory of evolution.