- May 22, 2015
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We can do better than that. Moral "facts" can only be demonstrated using reason, ergo arguments. So consider:Neither has any evidence been provided for those who support some objective morality. The principle of parsimony suggests the subjectivists are in the right. We know we have opinions. We do not seem to have any access to some objective code of morals, and the requests to provide such a thing are met with smoke bombs or falsehoods.
We ought not do X.
This cannot be demonstrated in any other way than through argumentation. So we have to form a valid argument to prove any statement of the form "We ought not do X". In order to make that argument valid, we must have an "ought" statement in the premises to link them together. Example:
We ought not harm innocents.
Murder harms innocents.
We ought not murder.
That's valid, but in order for it to be sound we have to prove all of our premises, yes? So we also need to prove that "We ought not harm innocents" is true. And the only way to prove an "ought" statement is through argumentation with an "ought" statement in the premises, and so on. No "ought" statement, and therefore no moral fact, can ever actually be justified. Thanks PSR!
If anyone thinks that the "ought" statement isn't a necessary premise, put it into the argument flipped (positive claim to negative claim or vice versa) and watch how the argument flips too.
In conclusion, it is logically absurd to consider any "ought" statement to be true.
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