the power of logic "Definitions" Flashcards

1
Q

what makes a word vague ?

A

if there are borderline cases in which there is no way to determine whether the word applies

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1
Q

what important role does definitions play in arguments ?

A

can be used to clear up ambiguity and make vague terminology more precise

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2
Q

what is the extension of a term ?

A

it consists of the set of things to which the term applies .

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3
Q

what is the intension of a tear ?

A

consists in the properties a thing must have to be included in the terms extension.

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4
Q

what is an extensional definition ?

A

specifies the meaning of a term by indicating the set of things to which the term applies

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5
Q

what are the two basic types of extensional definitions ?

A

nonverbal(ostenssive) / and verbal

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6
Q

how do you give an ostensive definition?

A

one specifies the meaning of a term by pointing to objects in its extension.

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7
Q

what its an enumerative definition ?

A

name the members of the extensions individually.

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8
Q

what are the two ways a definition may be ?

A

partial or complete

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9
Q

what makes and extensional definition complete ?

A

if all members of the extension is listed .

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10
Q

what is another kind of verbal extensional definition ?

A

subclass

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11
Q

what is a subclass ?

A

the members of the extension in groups

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12
Q

why can some terms not be defined extensionally ?

A

because their extensions are empty

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13
Q

what does an intensional definition do ?

A

specifies the meaning of a term by indicating the properties a thing must have to be included in the terms extension

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14
Q

what does it mean for lexical definitions to have truth values ?

A

it means they are either true or false

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15
Q

what is a lexical definitions ?

A

reports the conventional or established intension of a term

16
Q

what is a stipulative definition ?

A

specifies the intension of a term independently of convention or established use.

17
Q

what is a premising definition ?

A

reduces the vagueness of a term by imposing limits on the conventional meaning

18
Q

how does a premising definition differ from a stipulative definition ?

A

because it is not independent of the conventional meaning , but its like a stipulative definition in that it is a proposal to draw lines at a point not give by the conventional meaning

19
Q

what are theoretical definitions ?

A

is an intensional definition that attempts to provide an adequate understanding of he things to which the term applies

20
Q

what is a definiendum ?

A

the word being defined

21
Q

what is a definiens ?

A

the words or words that do the defining

22
Q

how is a difference by genus and subclass inadequate ?

A

if it fails to meet certain criteria

23
Q

what is a counter example ?

A

toa definition is something to which the term applies , but doesn’t met the conditions or it mets the conditions an the term does not apply to it

24
Q

what are figurative definitions ?

A

are generally either obscure or ambiguous

25
Q

what is a circular definition?

A

if the definiendum appears in the definiens

26
Q

what is a persuasive definition ?

A

makes the term sound good or bad unnecessarily ?

27
Q

what are the 5 types of definitions ?

A
  1. stipulative
    2.lexical
    3.precising
    4.theoretical
  2. persuasive