"He argued that our choice of what lies inside a system is essentially an ethical decision. By choosing what lies inside a system, you implicitly or even explicitly marginalize what lies outside the system. Thus Critical Systems is essentially about boundaries. Churchman argued that your choice of what lies inside a system's boundaries depends on your perspective or more deeply your values. If these choices are not reflected upon, they may well result in exacerbating the very problem you are seeking to address. Indeed, it may well cause you to frame the problem in unhelpful ways. Churchman developed methods of identifying these boundaries so that further viewpoints could be identified, addressed, and brought into the analysis."-Systems Concepts in Action, Chapter 19