Maverick Philosopher

Nihil philosophicum a me alienum puto

To promote independent thought about ultimates. Philosophy, commentary on the passing scene, and whatever else turns my crank. Since 4 May 2004. By William F. Vallicella, Ph.D., Gold Canyon, Arizona, USA. Motto: "Study everything, join nothing." (Paul Brunton) Latin Motto: Omnia mea mecum porto. Turkish motto: Yol bilen kervana katilmaz. (He who knows the road does not join the caravan.) All material copyrighted.

A Tension in Quine's Theory of Existence

This is a published article which appeared in Philo, vol. 6, no. 2 (Fall-Winter 2003), pp. 193-204. Lower case Roman numerals in brackets refer to endnotes.

ABSTRACT: According to Quine, the ontological question can be posed in three Anglo-Saxon monosyllables: “What is there?”[i] But if we call this the ontological question, what shall we call the logically prior question: “What is it for an item to be there?” Peter van Inwagen has recently suggested that this be called the meta-ontological question, and more importantly, has endorsed Quine’s answer to it.[ii] Ingredient in this Quinean answer to the meta-ontological question are several theses, among them, “Being is the same as existence”; “Being is univocal”; and “The single sense of being or existence is adequately captured by the existential quantifier of formal logic.” This article examines the last of these theses, which van Inwagen claims “ought to be uncontroversial.”[iii] But far from having this deontic property, the thesis in question ought to be not only controverted, but rejected.

Posted by William F. Vallicella on Wednesday April 23, 2008 at 4:19pm
w_ockham (mail) (www):
Agree with much, but not all of this. I hold

1. ‘somethingness’ and ‘existence’ are synonymous. I don’t accept, as I think you do, the wedge between being something, and being simpliciter.
2. Proper name-containing sentences, affirmative and negative, are both false when the name is empty. This is similar to Russell’s theory, assuming that the negation is always given narrow scope.
3. Unlike Russell, I do not hold that proper names are inherently general or universal. Proper names are irreducibly singular.
4. Nor do I accept ‘haecceities’, except as a Cambridge property, i.e. haecceity predicates (‘being Socrates’, ‘being Pegasus’) are logically predicates only, and do not signify or represent any property in re.

(Explaining the last point). The semantics of a proper name is merely its contribution to the validity of all inferences of the following form


Bilbo is a hobbit
Bilbo has furry feet
Some hobbit has furry feet.

I.e. I do not hold that ‘Bilbo’ here signifies some property that something has if either of the premisses are true. It signifies the licence of that inference, and of all inferences of the same logical form, and that is all that it signifies.
4.24.2008 2:26am
Peter Lupu (mail):
Bill,

First, thank you for raising these issues. They are important and I hope that many of your readers here will join this discussion.
Second, I will take upon myself to defend the Frege-Russell-Quine thin conception here. I do not agree with all its elements and I do not pretend to have a view or a solution to many issues raised. I shall play this role for three reasons: first, in order to learn more about these issues; second, in order to challenge you on your views; third, in order to invite others to join in a discussion that promises to be interesting.

peter
4.24.2008 6:10am
Bill Vallicella (mail) (www):
Peter,

I welcome your defense of the thin conception. It will be a good opportunity for me to test my views. What experiment is to the scientist, sustained dialectic with the right interlocutors is to the philosopher.

For me, metaphysics is at the heart of philosophy, and at the heart of the heart are questions about existence. So this topic 'gets my blood up.'
4.24.2008 12:20pm
Bill Vallicella (mail) (www):
O,

#1 is the main bone of contention, I think.
4.24.2008 12:24pm
Peter Lupu (mail):
Bill On Existence

I wish to address in this post two related issues in Bill's post:

(a)Bill's claim that according to the Frege-Russell-Quine thin conceptions of existence "existence is instantiation":
"instantiation theorist is one who holds that existence in its basic or primitive sense is just the being-instantiated of a concept, property, propositional function, or cognate item. In a slogan: existence is instantiation."
This is then Bill's claim that the thin conception is committed to the EXISTENCE IS INSTANTIATION THESIS.
The question I wish to raise here is this: Is Bill correct in describing the Frege-Russell- Quine thin conception of existence in terms of instantiation?
I shall argue that this way of characterizing the Frege-Russell-Quine view is misleading.
(b) Bill argues that the Frege-Russell-Quine thin conception of existence is committed to the reduction or even elimination of singular existence and that such a reduction or elimination is philosophically suspect. I shall call this the "singular existence problem."

Since according to Bill the singular existence problem follows from the "existence is instantiation thesis", the two issues are intimately linked. I shall examine this later claim after I discuss the "existence is instantiation thesis".
(A) Bill’s Existence is instantiation thesis:
In some of my previous posts on these issues I have said that the thin conception can be viewed as the thesis that existence is fully captured by quantification structure plus (absolute) identity. I believe that this way of characterizing the Frege-Russell-Quine thin conception has certain advantages over Bill’s existence is instantiation thesis.
First, since Quine is adamantly opposed to concepts, propositions, etc, whereas Frege accepts them, it is difficult to find common ground between them so as to put them in the same class under the rubric of existence is the instantiation of concepts. One the other hand, both Frege and Quine accept quantification and the modern version would be undoubtedly embraced by Frege.
Second, as I have also noted in one of my previous posts, we must be careful not to import Frege’s comprehension axiom into the way we characterize existence as instantiation due to the familiar paradoxes. If possible, it is best to avoid the concept of instantiation altogether and stick to the idea of satisfaction. Of course, here we go linguistic, for it is open sentences that are satisfied by objects, but I believe this will turn out to be an advantage.
Third, existence is instantiation does not require quantifiers. We can imagine a fragment of a language which contains only predicates and singular terms; it lacks quantifiers and variables. In such a language we can talk about instantiation because the referents of singular terms either instantiate or do not instantiate certain predicates, concepts etc. So Bill’s thesis of instantiation would be applicable to this language fragment even though it contains no quantifiers or variables. However, if we think of the Frege-Russell-Quine conception as identifying existence with quantification, then their conception will not be applicable to such a language fragment. Hence, Bill’s thesis of existence as instantiation does not fully capture the Frege-Russell-Quine’s quantificational conception of existence.
(B) Existence as Quantification Structure plus Identity:
(i) When we say that “Bob is a tall lawyer” there is a clear sense in which we are talking about an individual; namely Bob, and say something about this individual. On the other hand, when we say “There exists a tall lawyer” we are not talking about Bob or any other individual in particular. We simply say that the world, or some other narrower universe of discourse, contains a tall lawyer. Thus, quantifiers such as ‘some’, ‘there is’, ‘all’, ‘every’, etc., are inherently general: their use in a sentence converts the sentence into a statement about the whole universe of discourse. This is then the difference between singular terms such as names (let us leave definite descriptions aside for now) and quantification.
(ii) The above account of quantification signals a sharp distinction between the use of predicates and names, on the one hand, and quantifiers on the other. While the former purport to single out an individual object in order to attribute to it something, the use of quantifiers is intended to assert something about the whole universe of discourse: i.e., in the case of the existential quantifier we assert that the universe includes some objects of a certain kind; in the case of the universal quantifier we assert that all objects in the universe of discourse are such-and-such. It is in this sense that the quantifiers are “second order concepts”, using Fregean terminology here (not Russellian or Quinean).
(iii) The above sheds some light on the thin conception of existence as quantification. It is general in the sense that if we think of existence claims in terms of quantification, then we do not assert something about an individual: we assert something about the whole domain of discourse. Take a statement about a particular individual, say Bob, and assert that this object exists:
(I) Bob exists.
The thin conception’s rendering of this statement is:
(II) Ex (x=Bob).
(II) in effect states that there is an object in the universe of discourse that is identical to Bob. So the quantificational rendering of (I), which is a singular existence statement, is converted into partly a general statement about the universe of discourse and what it contains in (II).
(C) The singular Existence Problem:
Bill has argued that the (in my words) quantification conception of existence entails a reduction or elimination of singular existence in favor of general existence. The sense in which this claim is true has been articulated above in points (Bi)-(Biii). Since quantification is inherently general, any existence claims expressible by means of quantification will import the kind of generality that quantification brings to the table. And this goes for the so-called singular existence claims.
But is this a problem?
Bill argues that there is something important about singular existence claims that is lost when rendered quantificationally. But, now, what exactly is lost in such a translation? Occasionally the lost element is expressed as follows:
What is it for Bob, in particular, to exist?
Well, I suggest that there are many mundane things that the existence of Bob implies, but all of these can be easily expressible by means of standard discourse. None of these are lost in the quantificational translation. Bill obviously has in mind something else; something that the existence of Bob and his existence alone introduces into the world. But, other than being Bob, what else could that special thing be? And the answer cannot be: well, there is this further question, namely
What it is like to exist like a Bob?
For either this question has no answer or the answer to it is a list of things none of which are lost in the quantificational translation of Bob’s existence. Things such as that Bob has certain kind of parents; that Bob had a reasonably good/bad/normal childhood; that Bob married when he was too young/old or neither; that Bob evolved into being a good lawyer, etc. What else could we say in a positive way about the question of what it is like to exist like Bob?
I do not have a clue.
And that in a nutshell is my problem with Bill’s critique of the thin conception and with the attempt to go beyond it.
peter
4.24.2008 2:16pm
Bill Vallicella (mail) (www):
Thanks, Peter. You write,

it is best to avoid the concept of instantiation altogether and stick to the idea of satisfaction. Of course, here we go linguistic, for it is open sentences that are satisfied by objects, but I believe this will turn out to be an advantage.

This won't cut it. As I suggested earlier, this leads to an absurd linguistic idealism. The existence of the moon cannot be identified with the satisfaction of any predicate or open sentence for the simple reason that the moon exists at times when language does not exist and in possible worlds in which language does not exist.

The moon exists. I want to know what it is for the moon or any contingent being to exist. You say that it is for that item to satisfy a predicate. But predicates are themselves contingent beings. So I don't see how you avoid linguistic idealism.
4.24.2008 3:32pm
Bill Vallicella (mail) (www):
Peter,

The problem may be that you cannot attach any sense to the question, What is it for a contingent being to exist? If you could attach a sense to that question then I think you would see that is is no answer at all to say that for Bob to exist is for Bob to be identical to something that exists -- which is what Quine's explication comes to.

By my lights, proponents of the thin conception are simply blind to singular existence. Of course, you might return the 'compliment' and say that people like me suffer from double vision: we see Bob, but we also 'see' the existence of Bob when there is no existence of Bob, there is just Bob.

So let me put it to you this way: Do you admit any distinction in a contingent individual between it and its existence?
4.24.2008 4:03pm
Peter Lupu (mail):
Bill,

"So let me put it to you this way: Do you admit any distinction in a contingent individual between it and its existence?"

No!

peter
4.28.2008 2:19pm
Account:
Password:
Remember info?
1. Leaving comments is a privilege, not a right. The site administrator is under no obligation to accept comments at all, let alone from any particular person. And to underscore the obvious: nothing in the nature of a weblog requires that it accept comments from readers.
2. Disallowing comments from a particular person, or deleting an offensive, off-topic, or otherwise substandard comment, has nothing to do with censorship. People who think otherwise confuse censorship with lack of sponsorship. I am under an obligation not to interfere with anyone's exercise of legitimate free speech rights. But I am not under any obligation to aid and abet anyone's exercise of free speech rights, legitimate or illegitimate.
3. The Comments area is not an open forum for anyone to say anything about any topic. As the name implies, it is primarily for commenting on the author(s)' posts. But to comment on them, one must have read them. And if I have spent three hours on a post, a reader will not understand it in thirty seconds. Secondarily, the Comments area is to facilitate civil discussion between and among commenters as long as the discussion remains on-topic.
4. Some undesirables: The skimmers, those who cannot read but only read-in. The sophists who, abusing argument, argue for the sake of argument. The ideologues, those who are out for power, not truth. The uncivil. The illogical. The politically correct. Worst of all, perhaps, are those who exemplify the anti-Socratic property: those who think they know what they don't know. If Socrates was famous for his learned ignorance, these types are marked by their ignorant unlearnededness.