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16 Cards in this Set

  • Front
  • Back
Deductive
If it is NOT possible for the premises to be true while the conclusion is false. VALID
Invalid
If it IS possible for the premises to be try while the conclusion is false
Sources of Knowledge
Sense experience- Basic observational knowledge
Inner experience- Knowledge of your own mind*meanings*
Intuition of essence-
-logical
-Mathematical
-Relations
Deductive Arguments
Allows you to extend your knowledge with certainty.
-If premises are true, then the conclusion must be true
Inductive Arguments
Allow you to extend your knowledge of what is probable
-If premises are true, then conclusion is LIKELY to be true
Modus Ponens MP
P->Q Valid
P
____
Q
Modus Tollens MT
P->Q Valid
nQ
____
nP
Hypothetical Syllogism HS
P->Q The Dog Valid
Q->R
____
P->R
Disjunctive Syllogism DS
PvQ Valid
nP
____
Q
Dilemma DM
PvQ Valid
P->R
Q->S
____
RvS
Affirming the Consequence AC
P->Q Invalid
Q
____
P
Dening the Antecedant DA
P->Q Invalid
nP
_____
nQ
Ad Hominem
*against the person*
you attack the persin instead of arguing against their views
Ad ignorantiam
*appeal to ignorance*
can't disprove P
____________________
so P
Ad Populum
*appeal to the people*
1)Appealing to the emotion of the people
2)Appealing to a person to go along with the crowd
Begging the Question
-Implicity using your conclusion as a premises
-Assuming what you claim to be proving