• Objective Obligation: This element is fundamental because it establishes that moral duties transcend social customs and personal feelings.
  • Punishment for Immoral Actions: The inclusion of consequences for violating moral norms is critical for enforcing the moral system and maintaining social order.”
  • Access for all Moral Agents: For a moral system to be fair and effective, all moral agents must have the ability to know and understand the moral laws they are expected to follow.”
  • Internal Logical Coherence of the Moral System: Logical consistency is crucial for any philosophical system, including moral systems. Inconsistencies undermine the system’s credibility and can lead to confusion or exploitation of loopholes.”
  • Distinguishable from Emotions: While emotions are significant in motivating moral behavior, a robust moral system should not be based solely on emotional responses, which can be subjective and variable.”

What elements are logically necessary to any coherent moral system?

Include the elements in the following list in your assessment:

  • Objective Obligation: This would be an obligation that is not merely peer or societal pressure.
  • Punishment for Immoral Actions: It seems it would make no sense for there to be an objective moral system if “immorality” had no punishment.
  • Access for all Moral Agents: It seems absurd to have a moral system impinge upon the conduct of moral agents if those moral agents have no access to the moral facts they are obligated to conform to.
  • Internal Logical Coherence of the Moral System: Logical inconsistency would disqualify any proposed moral system.
  • Distinguishable from Emotions: Moral judgments should be based on something other than just emotional dispositions such as abhorrence or compassion.
  • Moral Autonomy: Those deemed moral agents under the moral system need to have free will make their own moral choices.

What proposed moral systems include these necessary elements? List each moral system, and discuss the nature of each necessary element.


The following are proposed ways to refute the coherence of a moral system. Elaborate on each and provide any evaluative criteria of your own.

  • Disagreement on specific moral facts: If a moral system is truly accessible to all agents under that moral system, there should be no disagreement on what is moral.
  • Temporal inconsistency in the application of morality: For example, if slavery is morally wrong now, it should have always been morally wrong.
  • Regional inconsistency in the application of morality: For example, if slavery is morally wrong for Group A, it should be wrong for Group B.
  • Inconsistent punishments: If the degree of punishment administered for the degree of a moral offense is inconsistent across individuals, the system fails.

Create a 10-item quiz on the entire thread above.


Provide 15 discussion questions relevant to the content above.


Leave a comment


Phil Stilwell

Phil picked up a BA in Philosophy a couple of decades ago. He occasionally teaches philosophy and critical thinking courses in university and industry. He is joined here by ChatGPT 4, GEMINI, CLAUDE, and occasionally Copilot, his far more intelligent AI friends. The five of them discuss and debate a wide variety of philosophical topics I think you’ll enjoy.

Phil curates the content and guides the discussion, primarily through questions. At times there are disagreements, and you may find the banter interesting.

Goals and Observations




Indicate your interests:


Links to Section Menus