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Originally Posted by batair
You cant really say for sure morality isn't apart of the physical world. Morality could come form evolution, big brains and evolving in social groups that need to get along. If it does then it should be able to be independently confirmed, at least some day i would think. Not that anyone can confirm morality coming form the natural world means the natural world didn't get its morality form a God.
Reminds me of the (incorrect) saying used by materialists to the effect that you can't go against nature because when you do that's part of nature too.
See also my comments following.
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Originally Posted by Original Position
You confusing the epistemic and existence criteria for normativity.
I think you are, actually.
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I know that the chemical structure of water is made up of three atoms because I've been told so by reliable authorities. However, these reliable authorities did not make the chemical structure of water such by saying so.
The chemical structure of water is an objective reality independent of any authority's opinion on the matter. A prescriptive rule is such only because, and insofar as, an authority says so.
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In the same way, I can be told that lying is wrong by a reliable authority. But these reliable authorities do not make lying wrong by saying so.
Yes they do, if the "wrongness" of an (immoral) act consists entirely in violating the prescription of a prohibiting authority.