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2 be logical
introductory logic lessons 10-13
| Question | Answer |
|---|---|
| real disagreement | an actual inconsistency between two statement: they cannot both be true at the same time |
| apparent disagreement | a difference of opinion or perception |
| verbal disagreement | a misunderstanding due to differing definitions for one or more words |
| categorical statement | a statement that affirms or denies something about a given subject |
| subject | the term being described, or about which something is asserted |
| predicate | the term that describes or asserts something about the subject |
| quantity | the scope of a statement's claim about the extension of a subject |
| quality | the positive or negative nature of a statement's claim about the subject |
| universal | entire extension |
| particular | partial extension |
| affirmative | asserts something |
| negative | denies something |
| square of opposition | a diagram of the basic relationships between categorical statements with the same subject and predicate |
| A statements | universal affirmative |
| E statements | universal negative |
| I statements | particular affirmative |
| O statements | particular negative |
| Every categorical statement can be | put into one of four basic forms. |
| To analyze statements using categorical logic, | translate them into a form that uses the verb of being. |
| Sometimes statements may seem inconsistent | but actually are not. |