Quine, On What There Is - PowerPoint PPT Presentation

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Quine, On What There Is

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... some things don't exist: hobbits, dragons, Pegasus. What there is What there isn't. Horses Dragons. George Bush Pegasus. Prime numbers ... Dragons. All Objects ... – PowerPoint PPT presentation

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Title: Quine, On What There Is


1
  • Quine, On What There Is
  • A curious thing about the ontological problem
    is its simplicity. It can be put in three
    Anglo-Saxon monosyllables What is there? It
    can be answered, moreover, in a word
    Everything and everyone will accept this
    answer as true. However, this is merely to say
    that there is what there is. (p. 4a)
  • (Q) Everything exists.

2
  • But, surely, some things dont exist hobbits,
    dragons, Pegasus.
  • What there is What there isnt
  • Horses Dragons
  • George Bush Pegasus
  • Prime numbers 10 Largest prime
  • (T) There are things that dont exist
  • xEx (Ex x exists) ??
  • Platos Beard, or The Riddle of nonbeing
  • How do we talk about what is not?
  • When we deny the existence of x, what are we
    saying?

3
  • Some dumb philosophers, like McX, make the
    following argument If Pegasus were not, we
    should not be talking about anything when we use
    the word therefore it would be nonsense to say
    even that Pegasus is not. (4b)
  • When pressed, McX says, the Pegasus-idea exists.
    But, of course, thats something different from
    Pegasus.

4
  • But some clever philosophers, e.g. Wyman
    (Meinong), argue that Pegasus has his being as an
    unactualized possible. (p. 5a)

Dragons
All Objects
Actual Objects
Horses
5
  • On this view, George Bush exists he is
    spatio-temporally connected to you and me.
  • Pegasus, on the other hand, subsists Pegasus is
    a merely possible object.
  • But, for Quine, this leads to a bloated
    universe, a slum of possibles. He is an
    advocate of desert landscapes. (p. 5b)
  • Consider the possible fat man in the doorway. Is
    he identical with the possible bald man?
  • Slogan 1 No entity without identity

6
  • Resolution
  • Russell singular descriptions.
  • The author of Waverly was a poet
  • ? Something wrote Waverly and was a poet and
    nothing else wrote Waverly.
  • Virtue of Russells approach use of bound
    variables, variables of quantification, i.e.
    something, nothing etc. Not names at all.
  • Russells theory of descriptions allows us to
    discuss non-being.
  • We must rephrase Pegasus as a definite
    description the winged horse that was captured
    by Bellerophon
  • I.e. Pegasus does not exist ? Either every
    thing failed to be the winged horse that was
    captured by Bellerophon or two or more things
    were winged horses captured by Bellerophon.

7
  • Turn to universals
  • McX claims that houses, roses, etc. can have an
    attribute redness in common.
  • Ergo, McX attributes exist.
  • Ontological commitment
  • We could say There is something which red houses
    and sunsets have in common. Or There is
    something which is a prime number larger than a
    million.
  • Slogan 2 to be assumed as an entity is, purely
    and simply, to be reckoned as the value of a
    variable.

8
  • Some dogs are white some things that are dogs
    are white.
  • x(Dx Wx)
  • The range of the variable extends over some white
    dogs (if any there be) but not over doghood and
    whiteness.
  • On the other hand, when we say that some
    zoological species are cross-fertile, we are
    committing ourselves to recognizing as entities
    the several species themselves, abstract though
    they are. (p. 9b)

9
  • We look to bound variables not to know what there
    is but in order to know what a given remark or
    doctrine says there is. (p. 10b)
  • Reasons for operating on the semantic plane
  • (1) to escape the problem from the beginning in
    which Q has difficulty talking about things that
    McX countenances and Q does not.
  • (2) to find common ground on which to argue, n.b.
    references to conceptual schemes.
  • Our acceptance of an ontology is similarity to
    our acceptance of a scientific theory ? we adopt
    (or ought to adopt) the simplest conceptual
    scheme
  • But appeals to theory simplicity are tricky.
  • What ontology do we adopt?
  • Question is open approach with tolerance and an
    empirical spirit.
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