Logic 4. Flashcards
Def: Statement
A particular kind of sentence that brings a message that can be said to be either true or false
Def: Nonsense
A sentence that cannot be identified as either true or false and doesn’t refer to anything
Def: Self-Reports
A statement whose truth value can be determined from the statement itself
Def: Tautology
A statement that is always true by logical structure
Def: Self-Contradiction
A statement that is always false by its logical structure
Def: Supported Statement
It is a statement whose truth value depends on evidence or information from outside itself.
Sources of Information to Determine a Supported Statement’s Truth Favlue
- Authority
- Experience/Observation
- Deduction
4 Relationships Between Self-Supporting Statements/Supported Statements and Other statements
- Consistency
- Implication
- Logical Equivalence
- Independence
Def: Consistency
Two statements are consistent if they can both be true at the same time
Def: Inconsistency
A conflict between the statements
