Evidence, however, is not proof, and should not be expected or demanded to rise to that level. And the evidence should to be defined by the proposition, not by the antagonists of the proposition.
I missed this the first time I saw it. And I completely disagree with this. Both the proponents and the opponents of a position are free to give their evidence and to argue against the evidence proposed by others. For that matter, the same is true of those that are neutral about the proposition.
So, I agree that proof, outside of pure logic and math, is impossible. But mere consistency is NOT the same as evidence.
For example, it is certainly *consistent* with the existence of unicorns that horses exist. But, the existence of horses is not evidence for unicorns. And, in fact, the existence of horses is not evidence one way or the other for the existence of unicorns.
Someone claiming the existence of unicorns does NOT get to state what is and is not evidence for the existence of unicorns. Instead, they get to state what the properties of unicorns are and offer up what they consider to be evidence. Those who don't think unicorns exist (or that the evidence is weak) get to offer alternative explanations of the 'evidence' or to show how the offered evidence has no bearing on the existence of unicorns at all.
I propose that the same level of evidence for the existence of a deity be required as for the existence of anything else. If the evidence would not be enough to support the existence of unicorns, it isn't enough to support the existence of a deity.
As a common example, the existence of a tree is neither evidence for nor against the existence of a deity. It is simply irrelevant. The reason? Trees would exist whether or not there is a deity. Their existence doesn't change the probability of the existence of a deity at all. The same is true for the rest of life on Earth and , for that matter, for every piece of evidence offered in support of the existence of a deity.
We also know that philosophical reasoning isn't able to provide real evidence. It is far too easy to be mislead by philosophical speculation and there are too many alternatives to any philosophical statement made. Again, philosophy alone cannot change the ultimate probabilities.
So, I would ask what *actual* evidence for the existence of a deity has been given. Ever. What actual observation or argument changes the likelihood of there being a deity one iota?