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100. Comment #471691 by nother person
I don't think that physical claims are assumption free. It's not a matter of substituting assumptions but of adding them. You cannot imply that moral facts exist as physical facts if they don't exist in the same frame of reference. If you need to assert that "Minimazation of pain" is ethically desirable as an added axiom in order for action A to be desirable then the claim "action A is morally right" is no longer a factual claim in the same way that "humans and chimpanzees share a common ancestor" is.
Permalink Tue, 23 Mar 2010 21:31:00 UTC | #451615