The big idea
To call something truly evil, you need a standard that is not just your opinion.
Here is a turn most people have not considered. The problem of evil is the strongest argument against God, and it depends on evil being real — not disliked, not culturally disfavored, but genuinely wrong.
If morality is only preference or evolved instinct, then "that is evil" reduces to "I strongly dislike that." And a strong dislike is not an argument against anything existing. The objection needs objective moral facts to have force, which is exactly what a purely material worldview struggles to supply.
This is not a gotcha and should never be delivered as one. Many thoughtful atheists have serious accounts of moral realism, and the conversation is worth having on the merits. The point is simply that the objection is not free — it comes with commitments, and those commitments are worth examining together.
Key argument
The objection borrows the standard
- 1The problem of evil requires that some things be genuinely, not merely subjectively, evil.
- 2Genuine moral facts require a standard beyond individual or cultural preference.
- 3Therefore the objection presupposes objective morality.
The objection
"Morality comes from evolution and social cooperation."
Best response
That is a plausible account of where moral feelings came from. The gap is between feelings and obligations. Evolution can explain why I feel that cruelty is wrong; it does not establish that someone who feels differently is mistaken. Description and obligation are different things.
Mistake to avoid
Turning this into "you have no basis for morality, so your objection is invalid." That is a debate trick and people rightly resent it.
Conversation move
"I take the problem of evil seriously — it is the strongest objection there is. Can we look together at what makes something genuinely evil rather than just unwanted?"
Memory line
"The problem of evil is not free. It comes with commitments."
Practice
Explain the is/ought gap to someone in two sentences without using philosophy jargon.
Self-check
2 questions to check the idea stuck. This one is just for you — it is not scored and does not affect your quiz accuracy. The path quiz is the graded one.
Why does the problem of evil presuppose objective morality?
Explaining the origin of moral feelings establishes moral obligations.
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