Intro to logic facillies Flashcards
Argument
a group of propositions one of which is a conclusion that is supported by one or more premise (only one conclusion in an argument )
Proposition
a statement that can be confirmed or denied (true or false)
Inference
the property by which premises lend support to conclusions (entailment)
premise
the property in which the premises support the conclusion.
conclusion
supports the premises
Induction
conclusion amplifies the premises.
Deduction argument
defined as “an argument that attempts to show that its
the conclusion follows necessarily from the
premises
Validity
a property of a deductive argument that says if the premise is true then the conclusion must be true. Cannot be false.
soundness
is the property of a valid deductive argument were the
premises are actually true.
Fallacy
A bad argument that tends to persuade
Attacking the person
happens when attacking the person making the argument. Rather the argument itself
Inappropriate authority
someone who gives false information on something.
appeal to the people.
you should believe something that others believe.
strawman
destart an opponent’s argument to make it look bad so it can be easier to attack..
appeal to pity
persuading out of emotion
slippery slope
chain of events happens but with little evidence and unrelated information.
False cause
you are intruding to be the cause when it is not the cause
Modus Pones
study on paper
Modus tolens
study on paper
Hypothethical syllogism
on paper
Disjunctive syllogism
on paper
Method of argument
you find that one factor that is common to all the incidents of all the effects.
Ex:picinic cookout of these 10 people they all had variety of things common all 10 people shrimp cause of the illness is shrimp
method of difference.
All of the people who didn’t get sick didn’t eat the shrimp.
method of agreement and difference
put these 2 together