# Possibility != Existence

**URL:** <https://boards.straightdope.com/t/possibility-existence/152538>\
**Category:** Great Debates\
**Created:** [February 3, 2003, 5:32pm UTC](https://boards.straightdope.com/t/possibility-existence/152538 "2003-02-03T17:32:47Z")\
**Posts on this page:** 20\
**Page:** 11

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**Author:** ![Liberal](https://avatars.discourse-cdn.com/v4/letter/l/848f3c/32.png) [@Liberal](https://boards.straightdope.com/u/Liberal)\
**Post date:** [February 7, 2003, 2:35pm UTC](https://boards.straightdope.com/t/possibility-existence/152538/201 "2003-02-07T14:35:45Z")

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> [@](#):
>
> I don’t see why, in modal logic (with three rather than two outcomes), you’d be allowed to throw out the possibility of contingency in your definition.

Would you define the Supreme Being as contingent?

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**Author:** ![SentientMeat](https://avatars.discourse-cdn.com/v4/letter/s/43a26b/32.png) [@SentientMeat](https://boards.straightdope.com/u/SentientMeat)\
**Post date:** [February 7, 2003, 2:37pm UTC](https://boards.straightdope.com/t/possibility-existence/152538/202 "2003-02-07T14:37:00Z")

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“If this triangle is equilateral, then _this triangle is equilateral in all possible worlds_”

Only in Euclidean geometry. The triangle might not be equilateral in other geometries.

I posit there is a possible world where God does not exist (but NE does).

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**Author:** ![Liberal](https://avatars.discourse-cdn.com/v4/letter/l/848f3c/32.png) [@Liberal](https://boards.straightdope.com/u/Liberal)\
**Post date:** [February 7, 2003, 2:41pm UTC](https://boards.straightdope.com/t/possibility-existence/152538/203 "2003-02-07T14:41:28Z")

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Sentient wrote:

> [@](#):
>
> I posit there is a possible world where God does not exist (but NE does).

Then what is God? Doubtless, while the four-hundred-year-old definition is lacking, yours will suffice.

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**Author:** ![Left\_Hand\_of\_Dorkness](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/left_hand_of_dorkness/32/7156_2.png) [@Left\_Hand\_of\_Dorkness](https://boards.straightdope.com/u/Left_Hand_of_Dorkness)\
**Post date:** [February 7, 2003, 2:44pm UTC](https://boards.straightdope.com/t/possibility-existence/152538/204 "2003-02-07T14:44:01Z")

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> [@](#):
>
> \*Originally posted by Libertarian \*  
> \*\*Would you define the Supreme Being as contingent? \*\*

Nope - I wouldn’t think that would be allowed, any more than I’d think it would be allowed (in traditional logic) for me to define the Supreme Being as “that about which the statement, ‘this being exists,’ is true.” It’s begging the question. I also wouldn’t include the statement, “the supreme being is impossible,” or, “the supreme being is necessary,” in my definition, because to do so is also begging the question. The point of modal logic is to determine whether an entity is necessary, contingent, or impossible; I would think any definition that includes any of these states cannot be properly examined using modal logic.

I have to point out that when you say,

> [@](#):
>
> McHugh is saying nothing that hasn’t been said for four hundred years. Suspect whatever you wish.

You’re incontrovertibly incorrect. McHugh is indeed redefining God in order to avoid Professor Martin’s objections to the ontological proof. I suggest that in doing so, he doesn’t fully avoid the definitional problems of the ontological proof, but he does create a new problem – namely, that the entity whose existence he “proves” has no meaningful existence.

If he weren’t saying anything new, then he wouldn’t have made this redefinition. He wouldn’t have written the paper. He corrects one ontological error, continues a second ontological error, and creates a third, new ontological error. But you are incorrect to accuse him of adding nothing new to the debate.

Daniel

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**Author:** ![Left\_Hand\_of\_Dorkness](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/left_hand_of_dorkness/32/7156_2.png) [@Left\_Hand\_of\_Dorkness](https://boards.straightdope.com/u/Left_Hand_of_Dorkness)\
**Post date:** [February 7, 2003, 2:45pm UTC](https://boards.straightdope.com/t/possibility-existence/152538/205 "2003-02-07T14:45:52Z")

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When I said,

> [@](#):
>
> I would think any definition that includes any of these states cannot be properly examined using modal logic.

I should have said,

> [@](#):
>
> I would think any definition that includes **or excludes** any of these states cannot be properly examined using modal logic.

Daniel

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**Author:** ![Liberal](https://avatars.discourse-cdn.com/v4/letter/l/848f3c/32.png) [@Liberal](https://boards.straightdope.com/u/Liberal)\
**Post date:** [February 7, 2003, 2:48pm UTC](https://boards.straightdope.com/t/possibility-existence/152538/206 "2003-02-07T14:48:36Z")

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Daniel

You are incorrect to say that I have accused him of “adding nothing new to the debate”. The definition is not the whole debate. He hasn’t redefined God. He has merely reworded the definition to get away from Martin’s protest that a looser definition may allow in a nefarious god. His first premise is then the same as everyone else’s, G -\> G, and is notated the same as everyone else’s, that it follows from the definition.

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**Author:** ![Liberal](https://avatars.discourse-cdn.com/v4/letter/l/848f3c/32.png) [@Liberal](https://boards.straightdope.com/u/Liberal)\
**Post date:** [February 7, 2003, 2:49pm UTC](https://boards.straightdope.com/t/possibility-existence/152538/207 "2003-02-07T14:49:56Z")

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Daniel wrote:

> [@](#):
>
> Nope - I wouldn’t think that [contingency] would be allowed, any more than I’d think it would be allowed (in traditional logic) for me to define the Supreme Being as “that about which the statement, ‘this being exists,’ is true.”

Then if God’s existence is not contingent, it is necessary.

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<div class="post-metadata">

**Author:** ![SentientMeat](https://avatars.discourse-cdn.com/v4/letter/s/43a26b/32.png) [@SentientMeat](https://boards.straightdope.com/u/SentientMeat)\
**Post date:** [February 7, 2003, 2:50pm UTC](https://boards.straightdope.com/t/possibility-existence/152538/208 "2003-02-07T14:50:58Z")

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> [@](#):
>
> Then what is God?

A thought. An idea. A fantasy. An imaginary construct. A fictitious illusion. Make-believe. Whimsy.

If you want any more I’ll have to fetch the thesaurus.

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**Author:** ![Liberal](https://avatars.discourse-cdn.com/v4/letter/l/848f3c/32.png) [@Liberal](https://boards.straightdope.com/u/Liberal)\
**Post date:** [February 7, 2003, 2:52pm UTC](https://boards.straightdope.com/t/possibility-existence/152538/209 "2003-02-07T14:52:09Z")

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Sentient wrote:

> [@](#):
>
> A thought. An idea. A fantasy. An imaginary construct. A fictitious illusion. Make-believe. Whimsy.

Can the same be said of your argument? 😉

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<div class="post-metadata">

**Author:** ![SentientMeat](https://avatars.discourse-cdn.com/v4/letter/s/43a26b/32.png) [@SentientMeat](https://boards.straightdope.com/u/SentientMeat)\
**Post date:** [February 7, 2003, 2:54pm UTC](https://boards.straightdope.com/t/possibility-existence/152538/210 "2003-02-07T14:54:49Z")

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> [@](#):
>
> Can the same be said of your argument?

Of course. I’m a materialist, remember.

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**Author:** ![Left\_Hand\_of\_Dorkness](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/left_hand_of_dorkness/32/7156_2.png) [@Left\_Hand\_of\_Dorkness](https://boards.straightdope.com/u/Left_Hand_of_Dorkness)\
**Post date:** [February 7, 2003, 2:54pm UTC](https://boards.straightdope.com/t/possibility-existence/152538/211 "2003-02-07T14:54:53Z")

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> [@](#):
>
> \*Originally posted by Libertarian \*  
> \*\*Daniel wrote:
> 
> Then if God’s existence is not contingent, it is necessary. \*\*

You misread me. As I said:

> [@](#):
>
> I would think any definition that includes or excludes any of these states cannot be properly examined using modal logic.

So in defining God, I wouldn’t make any reference to whether God was necessary, contingent, or impossible: to do so would make it impossible for me to examine God using modal logic, just as defining God as “a being about which the statement, ‘God exists’ is true” would make it impossible for me to evaluate God using traditional logic.

Once more: when McHugh got rid of the possibility of a nefarious God, he equally got rid of the possibility of a benevolent God. He threw the baby out with the bathwater.

Daniel

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<div class="post-metadata">

**Author:** ![robertliguori](https://avatars.discourse-cdn.com/v4/letter/r/46a35a/32.png) [@robertliguori](https://boards.straightdope.com/u/robertliguori)\
**Post date:** [February 7, 2003, 2:57pm UTC](https://boards.straightdope.com/t/possibility-existence/152538/212 "2003-02-07T14:57:03Z")

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> [@](#):
>
> Originally posted by Libertarian  
> As I said before, “God is possible” is one of three axioms in the proof. Asking for proof of an axiom is intellectually insane.

Very well. If you can state that “God is possible,” and work from there, what is stopping me from stating the axiom that God is impossible?

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**Author:** ![Left\_Hand\_of\_Dorkness](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/left_hand_of_dorkness/32/7156_2.png) [@Left\_Hand\_of\_Dorkness](https://boards.straightdope.com/u/Left_Hand_of_Dorkness)\
**Post date:** [February 7, 2003, 3:02pm UTC](https://boards.straightdope.com/t/possibility-existence/152538/213 "2003-02-07T15:02:15Z")

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**Robert** , the axiom in question states that:

> [@](#):
>
> Axiom 2 - If the concept of God is free from contradiction, then it is not logically necessary that God does not exist. [In other words, if God is consistently described then the existence of God is logically possible.]

I think this is valid: failing any a priori reason why a being cannot exist as defined, you gotta admit that it’s at least possible it exists. If you say, “Frank is a cat who is a pigeon,” then you’ve defined Frank in such a way that he is logically impossible: Frank exists in no worlds. But if you say, “Frank is not a cat or a pigeon,” and every time someone asks you, “Is Frank smart? Is Frank kind? Is Frank mean? Is Frank in Texas? Is Frank 50 pounds overweight?” you answer, “Nope!” (as McHugh answers), then you’ll never contradict yourself, and therefore, there’s some possibility that this Frank being exists. Whether Frank could exist in any meaningful sense is another question.

Daniel

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**Author:** ![robertliguori](https://avatars.discourse-cdn.com/v4/letter/r/46a35a/32.png) [@robertliguori](https://boards.straightdope.com/u/robertliguori)\
**Post date:** [February 7, 2003, 3:37pm UTC](https://boards.straightdope.com/t/possibility-existence/152538/214 "2003-02-07T15:37:02Z")

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Is the concept of God free from contradiction? Don’t we run into minor problems like, If God created space-time, where was he before then?

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**Author:** ![Left\_Hand\_of\_Dorkness](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/left_hand_of_dorkness/32/7156_2.png) [@Left\_Hand\_of\_Dorkness](https://boards.straightdope.com/u/Left_Hand_of_Dorkness)\
**Post date:** [February 7, 2003, 3:43pm UTC](https://boards.straightdope.com/t/possibility-existence/152538/215 "2003-02-07T15:43:39Z")

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> [@](#):
>
> \*Originally posted by robertliguori \*  
> \*\*Is the concept of God free from contradiction? Don’t we run into minor problems like, If God created space-time, where was he before then? \*\*

But see, that’s the beauty of McHugh’s definition: his God DIDN’T create space-time, because in order to do so, he’d have to be a Creative God, and McHugh defines God as that being to which no positive descriptor can be applied. “Creative,” like, “Destructive,” is a positive descriptor.

While other concepts of [Internally inconsistent](http://www.secularhumanism.org/library/philo/drange_1_2.htm) (check the link out – it’s interesting reading!), McHugh’s definition, by not saying much of anything at all, is internally consistent.

Daniel

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**Author:** ![TVAA](https://avatars.discourse-cdn.com/v4/letter/t/c57346/32.png) [@TVAA](https://boards.straightdope.com/u/TVAA)\
**Post date:** [February 7, 2003, 3:58pm UTC](https://boards.straightdope.com/t/possibility-existence/152538/216 "2003-02-07T15:58:46Z")

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How can a thing with no properties be said to exist at all?

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**Author:** ![Left\_Hand\_of\_Dorkness](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/left_hand_of_dorkness/32/7156_2.png) [@Left\_Hand\_of\_Dorkness](https://boards.straightdope.com/u/Left_Hand_of_Dorkness)\
**Post date:** [February 7, 2003, 4:02pm UTC](https://boards.straightdope.com/t/possibility-existence/152538/217 "2003-02-07T16:02:00Z")

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That, **Vorlon** , is the $64,000 question.

Daniel

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**Author:** ![Liberal](https://avatars.discourse-cdn.com/v4/letter/l/848f3c/32.png) [@Liberal](https://boards.straightdope.com/u/Liberal)\
**Post date:** [February 7, 2003, 4:05pm UTC](https://boards.straightdope.com/t/possibility-existence/152538/218 "2003-02-07T16:05:26Z")

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> [@](#):
>
> \*Originally posted by robertliguori \*  
> \*\*Very well. If you can state that “God is possible,” and work from there, what is stopping me from stating the axiom that God is impossible? \*\*

The problem with denying the possibility of God’s existence remains no matter how you approach it: it is a substantive denial of a positive ontological proposition, and therefore is a logical fallacy — thus, recognizing the possibiliy of nonexistence is to recognize contingency , and recognizing contingency is to recognize the possibility of existence.

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<div class="post-metadata">

**Author:** ![Liberal](https://avatars.discourse-cdn.com/v4/letter/l/848f3c/32.png) [@Liberal](https://boards.straightdope.com/u/Liberal)\
**Post date:** [February 7, 2003, 4:09pm UTC](https://boards.straightdope.com/t/possibility-existence/152538/219 "2003-02-07T16:09:42Z")

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> [@](#):
>
> \*Originally posted by DanielWithrow \*  
> \*\*That, **Vorlon** , is the $64,000 question.
> 
> Daniel \*\*

But the answer is free. From McHugh’s paper:

> [@](#):
>
> Objection III - If God can only be conceived in terms of negations, then there is no difference between God and absolute nothingness.
> 
> Reply III - The difference is that God is defined as a transcendental entity, the nature of which cannot be conceptualized, whereas nothingness is just the absence of any nature at all. God’s nature cannot be conceived because of its radical transcendence, whereas the nature of nothingness cannot be conceived because there is simply nothing to conceive. There is an obvious difference in meaning between “A hypothetical entity the nature of which transcends positive concepts” and “nonexistence.” The identification of the two is ruled out a prioi.

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**Author:** ![Left\_Hand\_of\_Dorkness](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/left_hand_of_dorkness/32/7156_2.png) [@Left\_Hand\_of\_Dorkness](https://boards.straightdope.com/u/Left_Hand_of_Dorkness)\
**Post date:** [February 7, 2003, 4:16pm UTC](https://boards.straightdope.com/t/possibility-existence/152538/220 "2003-02-07T16:16:41Z")

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I know an answer is in his proof, but it’s a dissatisfying answer. The exchange looks like this:

Q. What does it mean for a being with no properties to exist?  
A. It exists, man, it’s just too deep for you to understand.

If we cannot conceive of this being, how can we apply other concepts to it? How can we know that “existence” is a meaningful concept to apply to a being when there’s no other meaningful concept we can apply to it?

What is the meaning, in modal logic, of “radical transcendance”?

I suspect the term is undefinable by its very nature; if so, it doesn’t have a place in a logical proof, and cannot be used to answer the objection that the being has no meaningful existence.

The $64,000 question stands, as does my question about why we should consider “Hate” to be a positive quality (and therefore not ascribable to McHugh’s God) wherease “Love” is not a positive quality (and therefore is ascribable to McHugh’s God).

Daniel

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