A thought-provoking examination of how insights from neuroscience challenge deeply held assumptions about morality and law. As emerging neuroscientific insights change our understanding of what it means to be human, the law must grapple with monumental questions, both metaphysical and practical. Recent advances pose significant philosophical challenges: how do neuroscientific revelations redefine our conception of morality, and how should the law adjust accordingly? Trialectic takes account of those advances, arguing that they will challenge normative theory most profoundly. If all sentient beings are the coincidence of mechanical forces, as science suggests, then it follows that the time has come to reevaluate laws grounded in theories dependent on the immaterial that distinguish the mental and emotional from the physical. Legal expert Peter A. Alces contends that such theories are misguided—so misguided that they undermine law and, ultimately, human thriving. Building on the foundation outlined in his previous work, The Moral Conflict of Law and Neuroscience, Alces further investigates the implications for legal doctrine and practice.