  For those who do not share this reductionist view, however, the status of rational requirements becomes more puzzling. One might hold that practical reason is ultimately answerable to two different kinds of constraints: to rational requirements on the one hand, and to independent facts about what one has reason to do on the other hand. But this position is potentially unstable. Once the independence of structural requirements from normative reasons is made clear, it is no longer obvious why we should care about whether our attitudes do or do not comply with the structural requirements. On this view, there is nothing wrong with failing to take the necessary means to your end, unless the end itself is one that you have compelling reason to pursue (Raz 2005). More generally, it has been argued that there are no independent requirements of structural rationality at all, and that the appearance of such requirements within the deliberative point of view can be explained by substantive features of the reasons to which both practical and theoretical reason are ultimately and properly responsive (Kolodny 2005).