not at all, don’t confuse disagreement with God’s attributes (whether he is omniscent or not) with the precise understanding of those attributes (whether this involves seeing the future or not, or future contrafactuals). His attributes are well and consistently defined, it is the precise understanding of them that is sometimes debated, and this is a very different thing.
What can I say? I am baffled. So there are some attributes (mainly the so called omnimax ones) which are “not understood” precisely. In other words, they are loosely or imprecisely defined. It reminds me to that famous utterance by one of the US Supreme Court justices, who said about pornography: “I cannot define it, but I know it when I see it”. Which translates into unadultenated BS in my book. These attributes (just like pornography) are all human concoctions, and if they are loosely defined, then there is no reason to entertain them.
I don’t fully understand your second point, certainly I agree we can’t assume the existence of something that we are trying to prove.
That is good news.
I warn you though of the same thing, you can’t for instance, infer that from your secular standpoint, necessary existence doesn’t exist, therefore God can’t exist necessarily, since this would also be question begging.
Would it now? If the concept of “necessary existence” would turn out to be bogus, then it cannot be applied to anything, God included. Where is the question begging in that? It is as straightforward a syllogism as it can be.
- There is no entity that exist “necessarily”.
- God is an entity.
- Therefore God does not exist “necessarily”.
The logic is valid. If the first premise would turn out to be true, then it is not just a valid syllogism, but also a sound one. There is no question begging in that. Everything depends on the validity of the first premise.
Remember, you are trying to refute the ontological argeument by saying that the concept of God is incoherant. This is a very bold step and there is a substantial burden of proof on you to show that no coherant understanding of God and his attributes is even possible. Why not give your objections, so we can see what you mean.
Indeed, the onus is on me. Of course, your opening paragraph would give me some pretty strong ammunition, since you, yourself agreed that at least some of God’s attributes are not precisely defined, and I suspect that they cannot be precisely defined. But I will not go that route, at least for the time being. The concept of “necessary existence” will be sufficient. After all this concept does not suffer from the ambiguities of the omnimax attributes.
We start with the definiton of a
possible world. By definition, a possible world is a state of affairs, which is different from our world, to some degree. The level of difference is not defined, the only requirement is that the hypothesized world is without physical and logical contradictions. That is all.
Now, you could try to show that there is some “necessary” existence. In order to do that, you have to examine
ALL the possible worlds, and show that there is “something specific” which exists in each and every one of them, and so that “something” would exist “necessarily”. However, since the number of possible worlds is infinite, that task is “daunting”, to say the least. Mine is much simpler. All I have to do is show two possible worlds, which have nothing in common, and necessary existence is out into the never-never land.
One possible world would be identical to ours, except it would be composed of anti-matter, (positrons instead of electrons, anti-protons instead of protons, etc.). Obviously there is no ontological entity which would be (or even could be) in both worlds. But there are other examples.
For example, if the Milky Way would be removed from our world, the rest would still be a possible world (let me call this W1). Conversely, if all the other galaxies would be removed, and only the Milky Way remained, that would also be a possible world (let’s call it W2). There is no logical necessity that there would be a physical or logical contradiction if some of the galaxies would not be present.
Now, if we look at the intersection of these two possible worlds (W1 and W2), denoted by W1 * W2 (where the “*” sign is the logical intersection), the result is a
null world. Whatever exists in W1, does not exist in W2, and vice versa. At the first approximation we can conclude that there is no entity which would exist in both W1 and W2. But you could make an objection to this. After all the entities in W1 and W2 are not
simple entites, they are
complex ones, composed of smaller entites. And those smaller entities (atoms, electrons, quarks, etc…) do exist in both W1 and W2. And thus looking at the basic level, there are “things” which appear in both W1 and W2. Not the “same” particles, for sure, but atomic and sub-atomic particles cannot be “told apart”, one carbon atom is the same as any other carbon atom.
We have to dig deeper, and contemplate truly elementary entities, which are - by our current knowledge - the quarks.
So let’s consider the previously mentioned two “mini-worlds”, each containing one quark, of a different flavor. None of these worlds contain anything else, therefore there is contradiction in them, physical or “logical”. They are different from our existing world, but since they contain no contradiction, they are possible worlds - according to the
definition of “possible worlds”. Their intersection is the null-world. Besides, the null-world is also a possible world, for the same reasons. Therefore the concept of “necessary existence” is null and void.