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2. Fill in the details of the argument. Why does the author think these premises are true? For instance, in support of premise 2, you could cite some of the examples that Rachels provides. The United States used to permit slavery, but now it does not. It used to deny women the right to vote, but now it does not. These are concrete examples of moral progress.
As for premise 1, explain why relativism makes moral progress impossible. What is Rachels’ reasoning for this premise?