This essay reflects on the classic theories of development and their relevance in the current state of the society. Some traditional theories of development are identified and critical appraisal of their main arguments outlined. Explore the stages in Satir's model and the contribution of Satir's video to understanding developmental transitions in Freud and Erikson's models. Discuss the significance of Bateson's notion of an 'epistemological lens' towards making one a better therapist. Learn about the characteristics of life span development from Balte's point of view. Understand the relationship between the general societal messages put forward by Bateson and personal opinion about the meaning of going to therapy. Explore a personal experience that demonstrates Satir's stages of change in action. Lastly, address how and why developmental theory in general is important to the work of MFTs.