Of course, if something isn't completely knowable, the best you can do is to disprove one or more of its properties. If you can disprove a commonly-held property of God, anyone for whom that property is a deal-breaker would have to admit that their God doesn't exist (or redefine their God).
Well, that is the whole point behind the "question of evil". It shows that some of the characteristics that
some theists give to their concept of God are logically inconsistent with each other. Some of those people will actually redefine their God, but more often, they redefine the words used to describe Him.
Of course, if you only choose to disprove a property such as "God must be able to logically do the logically impossible," you wouldn't really be surprising anyone since very few theists hold that as a property of their God (those that believe their God to be able to defy logic don't generally expect to be able to logically understand the result).
Logic, in and of itself, is not the proof of a things existence. It is just a tool for showing if a concept is internally consistent. Many works of science fiction are quite logical, internally, provided you accept the premises.
The concept of "nomologically possible" establishes the premises as "obeys natural law". A supernatural god would be nomologically impossible.
Other, more commonly-held properties of God are more difficult to disprove.
Possibly. Give us some examples. Or I will. How about this commonly-held property of God:
God is good (I used to say it every day at grace).
As we have discussed, it can be shown that a god that is okay with anything that you "feel in your heart is right", is not good. He is amoral.
What other commonly-held properties of God would you like to discuss?
Perhaps this is the source of the confusion. The truth is that we all believe things we cannot prove. These are called opinions (as opposed to facts). There is very little that we can prove as fact.
I will agree with this. Proof is for math. Evidence is for science. Don't get me started on politics.
Some opinions are based on more evidence than others, and we all weigh the evidence available and come to an opinion. When it comes to the possibility of something existing, then the only evidence against it would be irrefutable proof that it cannot or does not exist. Which pretty much proves my point.
You can show that it is illogical
within it's own defined premises. But that old adage, "you can't prove a negative" has some validity. You can never prove a thing,
anything, doesn't exist because that would require that you know every single thing about the universe. So we are pretty much restricted to gathering evidence
for a thing in order to establish its validity. In my opinion, there is no evidence for any sort of God, based on the concepts of God that I have heard.
You can't prove Santa Claus doesn't exist.
If you're saying that it is irrational to have an opinion about anything for which there is no preponderance of evidence, then it would be irrational to believe in intelligent life elsewhere in the universe.
Actually, no. We realize that we have very little access to evidence about most of the universe, but we are aware that such evidence exists. But we also know that it is possible for intelligent life to arise, given the right situation. If you look at the universe, you might calculate that the right situation is likely to have occurred more than once given that many billions of opportunities.
On the other hand, it there is a great deal of evidence that there is no other intelligent life in this solar system. Possibly no other life at all.
It would also be irrational to believe that there are no gods since the only evidence that the existence of a god is impossible would be irrefutable proof that no god can or does exist.
If we had even just one god for which we had evidence, then it would be more likely. But one of the commonly-held notions of God is that he intercedes on Earth, even though no strong evidence can be presented for such a notion. I find that to be irrational, if understandable.
By your logic, when it comes to the existence of a god the only rational opinion is to have no opinion at all. I don't think it is irrational to believe that a god does exist or to believe that no gods exist -- as long as those beliefs are claimed to be opinion rather than fact.
LOL. Okay, I'm cool with that. But tell me, what sort of opinions do you value more highly, informed opinions, or uninformed opinions?