[Inquiry] Re: Extension x Comprehension = Information

[Jon Awbrey]

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ECI.  Note 42

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| The difference between subject and predicate was also considered in the
| last lecture.  The subject is usually defined as the term determined
| by the proposition, but as the predicates of A, E, and I are also
| determined, this definition is inadequate.  We were led to
| substitute for it the following:--
|
| The subject is the term determined in connotation and determining denotation;
| the predicate is the term determined in denotation and determining in connotation.
|
| We found that a term may be subject by virtue of being denotative or by virtue
| of being informative and that a term may be predicate by virtue either of being
| connotative or informative.  But the reference of both subject and predicate
| cannot be informative.
|
| Thus we have three kinds of judgments:
|
| IC
| DC
| DI
|
| In the first case the subject is informative, the predicate connotative;
| that is to say, the connotation of the symbol which forms the subject is
| explicated in the predicate.  Such judgments, usually called explicatory
| or analytic, I call connotative.
|
| In the scond case the subject is denotative, the predicate connotative;
| that is to say, the thing which is denoted by the subject is said to
| embody the form connoted by the predicate.  I call these judgments
| 'informative'.
|
| In the third case the subject is denotative, the predicate is informative.
| That is, the thing which the subject denotes is offered as an example of
| the application of the symbol which forms the predicate.  I call such
| judgments denotative.
|
| CSP, CE 1, pages 288-289.
|
| Charles Sanders Peirce, "On the Logic of Science",
| Harvard University Lectures of 1865, pages 161-302 in:
|
|'Writings of Charles S. Peirce:  A Chronological Edition',
|'Volume 1, 1857-1866', Peirce Edition Project,
| Indiana University Press, Bloomington, IN, 1982.

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