This chapter summarizes the findings of the book, offering a concise version of the answer the book gives to the “value problem in assessing feasibility”. It provides an overview of the book's argument, outlining how each chapter contributes to addressing this issue. The chapter also reflects on the book’s limitations, acknowledging the diversity within the field of integrated modeling and the normative standpoint adopted in the discussion. The chapter situates the book’s contribution within existing debates, emphasizing how it advances understanding of feasibility assessments in value-laden contexts. Finally, it cautions that despite their inherent value-dependence, Integrated Assessment Models convey a clear and robust call to action—the current trajectory of emissions must be decisively reversed to achieve sustainable futures.