In the book’s exercise, question marks occur because students are being asked to classify expressions. The exercise instruction and the expression to be classified have different functions.
“Zayd’s horse” expresses a relation without a full assertion: conception.
“Paradise is true” expresses a complete declarative claim.
If someone instead asks “Is Paradise true?”, the utterance is interrogative, not an affirmation. That difference comes from the expression’s actual use, not merely from a question mark in the exercise layout.
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Knowledge, Conception and Judgment
In the book’s exercise, question marks occur because students are being asked to classify expressions. The exercise instruction and the expression to be classified have different functions.
“Zayd’s horse” expresses a relation without a full assertion: conception.
“Paradise is true” expresses a complete declarative claim.
If someone instead asks “Is Paradise true?”, the utterance is interrogative, not an affirmation. That difference comes from the expression’s actual use, not merely from a question mark in the exercise layout.