In that case, any debate on anything is fallacious, because any argument appeals to emotion.
That's why arguments only work when based on common ground. In math, we take various axioms for granted. In politics, we take certain moral precepts for granted (and that's why a debate with, say, a libertarian capitalist tends to be very different from a debate with a communist).
It's a feature of human discourse that a person can deny or pretend to deny anything that's claimed, no matter how absurd. This is down to the fact that propositions aren't infallibly self evident and that you can't really make someone believe something in a practical sense. It's also a feature of human discourse that some things are just held true as a matter of practice, and that asking for a justification of said practice doesn't really make sense (this was Wittgenstein's much misunderstood point).
That is about all there is to say about relativism of all sorts. People disagree about some moral issues, but no one is a relativist in practice, just as no-one is an epistemological sceptic in practice - not because it's hard, but because it's impossible.
So relativism is just people engaging in mental masturbation – if they were honest about their own actions, they would realize that they don't believe in it either.
That is about all there is to say about relativism of all sorts. People disagree about some moral issues, but no one is a relativist in practice, just as no-one is an epistemological sceptic in practice - not because it's hard, but because it's impossible.
So relativism is just people engaging in mental masturbation – if they were honest about their own actions, they would realize that they don't believe in it either.
That's an absurd argument. Being a "relativist in practice" in no way implies having an easily maleable morality. It's simply a recognition of the nature of logic.
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