The Banned said:
Any proof for objective truth is going to require considering the immaterial. You have the same problem proving that it doesn't exist that I do proving it does exist. The burden of proof goes both ways. The problem is you remove the option for the immaterial from the board, and then ask me to prove it as if my side is the only one that needs to do so. I'm not running from the question. I'm simply not going to bother with an argument that requires the immaterial when the immaterial is not allowed as evidence.
If we can allow the immaterial, then I think I can prove the Christian view of objective morality is true over the others you mentioned, at least to the degree that philosophy can do so. But again, what's the point if you've already preselected which evidence is or isn't allowed?
Sorry if I missed something earlier - I'll read back through the thread later.
The burden of proof lies with the claim, not the skeptic. This is just a Russell's Teapot.
If we are to give credit to every proofless claim based on an inability to disprove those claims, we're left with epistemic paralysis and every claim that cannot be disproven has to be considered possibly true. I cannot disprove the majority of claims of any religion or any God / god - So, by your logic, what. . . . ? I have to consider them all true?
In practice, we get around this by assigning weights to certain claims. Even though I cannot disprove the existence of a teapot floating in space around Mars, I can assign a very low probability to that claim unless different evidence arrives.
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I have no problem with considering the immaterial as evidence. However, we should discuss the methods by which this knowledge is obtained. How is it evaluated? And we should establish consistent rules.
In other words, if Christian revelation is allowed as evidence, then you need a set of rules and demonstrations to show why other other religion's revelations can be discarded. Because if I can't discard non-Christian revelation, then the evidence of our data set of revelations is just nonsense. And it only makes sense by pairing a cultural context with each data point.
What other immaterial evidences should we consider? Subjective moral experience? Near death experiences? Demon possessions? Miracles?
So again, I'm open to considering the immaterial as evidence. But, as an example, you can't just say 'God spoke to me' and then complain if I don't believe you on grounds that I'm not considering your evidence.