solinoure wrote:
It is not the objectivity of the document the I question, but the choice of the document. Why choose one document over another? It is in the choosing of the document that the subjectivity infiltrates itself.
Yes, but your question was about whether a difference could objectively be known. A document could knowledge, and some would argue that one actually does, and they use argumentation to promote one document over another. Now, we can easily say that there is no document that is better than another document, but we cannot say that it is logically impossible for this to be an objective grounding for determining X to be ethical or unethical.
The reason I used "that the speaker accepts" in my comment is not a matter of subjectivity, the speaker is presumably choosing what he thinks to be true to be the truth, but rather to clarify that I am not presenting a particular document for this position. Rather I am just presenting a logical possibility, to basically claim that a moral claim can piggyback off of the evidence for another position.
In any case, I also have countered that subjectivity enters the evaluation of all claims, however, I think that people of religion do claim that their religions are correct, and that they do or can use a level of rationalization that is acceptable for other branches of life. This does not mean that they are correct at all, but I am not going to dismiss a scripturalist off-hand in a discussion that is put forward without additional metaphysical claims.(you didn't say that religious beliefs couldn't hypothetically provide standards at all, even if you reject the idea that they do)
In any case, I submitted 2 possibilities, a scripturalist one because it is known, and the position of ethicists, who argue for rational ethics on many many occasions. Now we can argue that the field of ethics is uncertain, but we cannot say that they do not attempt to create rational understandings of ethics.