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13 Cards in this Set
- Front
- Back
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When does a proposition distribute a term?
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A proposition distributes a term if it refers to all members of the class designated by that term.
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Which term does an A proposition distribute?
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In the A proposition (E.g. all senators are citizens) "senators" is distributed but "citizens" is not. In A propositions, the S is distributed but P is not.
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Which term does an E prop distribute?
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In the E prop (e.g. "No athletes are vegetarians") E props distribute both their subject and their predicate terms.
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Which term does an I prop distribute?
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In the I proposition (e.g. Some solders are cowards) both subject and pred are undistributed.
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Which term does an O prop distribute?
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In the O prop (e.g. Some horses are not thoroughbred) the subject is undistributed, but the predicate is.
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What determines whether the subject term is distributed or not? (e.g. Quantity, Quality, etc.)
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The quantity of any standard form categorical proposition determines whether its subject term is distributed or not.
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Which quality (affirm or neg) distributes the predicate?
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Affirmative propositions(whether universal or particular) do not distribute their predicate terms.
Negative propositions distribute the predicate. |
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What determines whether the predicate term is distributed or not?
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The quality of a standard form categorical proposition determines whether its predicate term is distributed or undistributed.
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In summary: A distributes what?
E distributed what? I distributes what? O distributes what? |
A distributes only the subject
E distributes both its S and P I distributes neither O distributes only the predicate |
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What is Existential Import?
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A proposition is said to have existential import if it typically is uttered to asset the existence of objects of some kind.
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Which terms (A,E,I, or O) assume existential import?
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I and O propositions assume existential import. For example, the I proposition (e.g. "Some solders are cowards) states that at least one solider exists who is a hero.
In the O proposition (Some dogs are not companions), the prop states that at least one dog exists who is not a companion. |
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According to Aristotle, why must A and E assume existential import?
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According to Aristotle, A and E must have existential import because a proposition with existential import cannot be derived validly from another that does not have such import. In other words, if I and O assume existential import, so must A and E, from which I and O are derived.
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How does the Boolean interpretation differ from Aristotle's?
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Every particular
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