 Revolution and epoch change is understood as the consequence of an economic structure no longer being able to continue to develop the forces of production. At this point the development of the productive forces is said to be fettered, and, according to the theory, once an economic structure fetters development it will be revolutionised—“burst asunder” (MECW 6: 489)—and eventually replaced with an economic structure better suited to preside over the continued development of the forces of production.