Several of the middle range theories covered thus far focus primarily on meeting the needs of patients in various health environments. Thus, it is important to know how to effectively evaluate the assumptions and tenets of those theories in order to understand the best time to implement them in clinical situations. Reflect on the similarities and differences between the Theory of Caring and the Theory of Comfort. Discuss how the meta-paradigms of nursing and environment are defined in both theories. Similarly, reflect on the similarities and differences between the Postpartum Depression Theory and the Uncertainty in Illness Theory. Compare and contrast how the meta-paradigms of person and health are defined in both theories and discuss the key assumptions of both theories as they relate to person and health.