Bioethics is a field of inquiry and as such is fundamentally an epistemic discipline. Knowing how we make moral judgments can bring into relief why certain arguments on various bioethical issues appear plausible to one side and obviously false to the other. Uncertain Bioethics makes a significant and distinctive contribution to the bioethics literature by culling the insights from contemporary moral psychology to highlight the epistemic pitfalls and distorting influences on our apprehension of value. Stephen Napier also incorporates research from epistemology addressing pragmatic encroachment...