Rationality is teleology, in the same way that atheism is religion. Specific utility theories are different sub-denominations that work in different circumstances.
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Combining irreconcilible principles of might and right is a problem of politics. One branch is order, and within order, one branch is law. Another are norms.
We do not know what norms are. Therefore, all the so-called theories about norms are descriptive.
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Morality calls out for an ontology which we lack.
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The ontology of mind remains unknown.