Slippery Slope Untestable Explanations Formal Fallicies Slippery Slope A fallacy that is an argument that rests on an unsupported warning that is controversial and tendentious to the effect that something will progress by degrees to an undesirable outcome ID: 420846
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Critical Thinking
Slippery SlopeUntestable ExplanationsFormal FalliciesSlide2
Slippery Slope
A fallacy that is an argument that rests on an unsupported warning that is controversial and tendentious, to the effect that something will progress by degrees to an undesirable outcome.Slide3
S.S CONT.
We should require gun owners to carry liability insurance, because if we do that, before long they will repeal the Second Amendment.
No, I don’t think we should tip servers 20%. The next thing you will know we will be tipping them 25%, then 30%, then who knows what. We will be giving our entire paycheck ever
ytime
we eat out.Slide4
S.S CONT.
Speakers need to support theoriesSome can be used as scare tactics.Slide5
Untestable Explanation
Fallacy in which that it cannot be tested, even in principle.Example(s)
He has heart issues because of sins done is a previous life.
The crime rate has gone up because of general moral decay.Slide6
U.E CONT
CircularVaguenessUntestableSlide7
Formal Fallacies
Affirming the ConsequentDenying the AntecedentUndisturbed MiddleSlide8
Affirming the Consequent
ExampleIf Jane is a member of a sorority, then Jane is female
Jane is female
Therefore, Jane is a member of a sorority
The form is what makes this invalid.
Switch claims 2&3Slide9
Denying the Antecedent
We get an invalid argument when one premise affirms the consequent of the other, the same thing happens when one premise denies the antecedent of the other.Example
If Sandy passed the final, then she passed the course.
Sandy did not pass the final.
Therefore, Sandy did not pass the course.Slide10
Undistributed Middle
Fallacy that happens when a speaker or writer assumes that two things related to a third thing are otherwise related to each other.Example
All cats are mammals
All dogs are mammals
Therefore, all cats are dogs.Slide11
Undistributed Middle
Can make a person or situation look suspicious.Doesn’t always prove valid