 Others see addiction as motivated on a standard structure of beliefs and desires, with addictive behavior simply reflecting the person’s highest priority (Foddy &amp; Savulescu 2010). Efforts to combine these contrary positions propose an interaction between systems that regulate desires and systems that control which of those desires are acted upon (Holton &amp; Berridge 2013). Similarly, addicts have been characterized as engaging in a misevaluation that, serving to explain their resistance to contrary evidence, is further reinforced by unthinking and impulsive behavior (Summers 2015; Lewis 2015). Reduced reasons-responsiveness and diminished responsibility have also been analyzed in terms of a deficiency of “extended agency”—the ability to extend one’s will over time to shape one’s future (Levy 2006). On another account, addiction can also be understood as disease or deficit in terms of an inability to realize vital goals, with addicts’ reduced health at least partially caused by mental disposition (Nordenfelt 1995).