Final answer:
Logical consistency in a moral system provides stability to moral decision making by preventing contradictory beliefs and ensuring a coherent ethical framework.
Step-by-step explanation:
Logical consistency is a crucial ingredient in a moral system because it endows moral decision making with stability. While logical consistency does not guarantee that a moral theory is true, it allows us to assess whether our moral beliefs can coexist without contradiction. The role of reason in moral philosophy is critical, as it underpins our ability to make sense of the moral framework we operate within. Seeking consistency in our moral outlook helps to avoid the pitfalls of contradictory beliefs, thereby providing a more stable basis for making moral decisions.
A set of moral beliefs needs to be coherent; if beliefs contradict each other, then they cannot all be true simultaneously. This understanding is essential in the field of ethics, especially within normative ethics, which deals with setting and defending norms for conduct based on logical foundations. By ensuring that our moral principles are consistent, we establish a structured approach to ethical reasoning that is both rational and practical, reflecting a world that makes sense.