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Argument
A set of reasons given to support or oppose a claim.
Premise
A statement providing support for a conclusion.
Conclusion
The statement that is supported by premises.
Dialogue
A conversation between participants to present opposing views.
Deductive Argument
An argument where, if the premises are true, the conclusion must be true.
Inductive Argument
An argument where, if the premises are true, the conclusion is probably true.
Presumptive Argument
An argument leading to a plausible but not certain conclusion.
Valid Argument
A deductive argument where true premises guarantee a true conclusion.
Sound Argument
A valid argument with all true premises.
Cogent Argument
A strong inductive argument with true premises.
Modus Ponens
If A, then B. A is true, so B must be true.
Modus Tollens
If A, then B. B is false, so A must be false.
Hypothetical Syllogism
If A, then B. If B, then C. Therefore, if A, then C.
Appeal to Expert Opinion
An argument using an expert’s opinion as evidence.
Appeal to Popular Opinion
An argument using general acceptance as evidence.