Ad Hominem
An argument that attacks the person rather than the argument. "You're just saying that because you're a philistine."
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Absurdity
A conclusion that is completely ridiculous and has no logical basis.
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Appeal to Authority
An argument that relies on the authority of someone else rather than the strength of the argument itself.
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Appeal to Ignorance
An argument that claims to be true simply because it hasn't been proven false.
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Begging the Question
A question that is so broad that it can't be answered without begging the question itself.
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Slippery Slope
A series of events that will inevitably lead to disaster, and if you don't stop one thing, the others will happen anyway.
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Straw Man
A false or weak argument that is used to attack a real argument.
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