Topic 2 (argumentation and fallacies) Flashcards
For midterm test, critical thinking
The form of an argument
Antecedent
Consequent
When is an argument valid?
When all premises are true
When the conclusion follows from the premises
Example of an argument using antecedent (p)/consequent (q)
if it’s a dog (antecedent, p), then it barks (consequent, q)
Syllogism
a model of reasoning based on the idea of deduction, consisting of two premises that generate a conclusion.
Types of syllogism
Conditional
Disjunctive
Dilemma
Conditional syllogism
syllogism that never affirms or denies the premises
Disjunctive syllogism
syllogism formed by a premise that presents itself as an alternative
Dilemma syllogism
argumentative syllogism where two possible hypotheses are presented, none of which is desirable
Conditional syllogism pattern and example
- if p, then q.
- P.
- therefore, q.
ex. - If Theo is a cat (p), then he meows (q).
2.Theo is a cat. - Therefore, Theo meows.
Disjunctive syllogism pattern and example
- Either p, or q.
- P.
- therefore, not q is not the case.
ex. - Either i think (p), or i feel (q).
- I think
- therefore, i do not feel.
Dilemma syllogism pattern and example
- Either p or q.
- If p, then r, If q, then r.
- therefore, in one way or another, r
ex. - Either i restore the tooth, or i extract the tooth.
- If i restore it, it hurts, If i extract it, it hurts.
- therefore, either option it still hurts
Fallacies
An argument that when reasons given, appear to support the conclusion but in reality, do not.