3Slippery SlopeArgues that A will cause B, then C, D, E….. all the way downhill to Z!Much of it is based on assumption.The series of events will inevitably lead to a catastrophe conclusion
4Examples of slippery slope arguments: Kids start out using the internet to do their schoolwork, but it isn’t long before they start surfing the net and chatting with perverts wearing leather and using fake names in chat rooms. Next thing you know, they start meeting pedophiles in malls and end up dead. So, I don’t let my kids use the internet.Today its gay marriage, and tomorrow they’ll be asking to legalize polygamy. Then marriage between family members. What about to pets? After all, animals have rights too, don’t they?
5One more slippery slope… “If you give us homework, then I’m going to have to stay up late. If I do that, I’m probably going to get sick just like my little sister who has a fever of 106 and is throwing up everything. Then , I’m going to do horrible at baseball tryouts, and I’ll never make Varsity. So, I’ll have to forget the major leagues, abandon my childhood dreams, and resign myself to collecting cans for a living. But, if you want to go ahead and give us homework, I can’t stop you; you’re the teacher.”
6Circular Reasoning The argument claims to prove a conclusion BUT The conclusion has already been assumed as a premise
7Examples of circular reasoning: Mike was the best candidate for president, because he was totally better than any of the others.If such actions were not illegal, then they would not be prohibited by the law.
8Signals of circular reasoning: An arguer keeps repeating a claim as if he has given evidence to support a conclusion.This is actually a ploy to avoid giving any justification
9The Bare Assertion Example: Son: Dad, can I have the car tonight? Definition: to close a debate with a simple declaration that it's over simply because you say so.Example:Son: Dad, can I have the cartonight?Father: Nope.Son: Why not?Father: Because I said so.
10These phrases are bare assertions Because I said so.That's just the way it is.That's all there is to it.Trust me.
11Other Examples of Bare Assertion Literature. The bare assertion is common in literature (The play Twelve Angry Men is loaded with fallacies. Juror #3 offers the bare assertion to another juror, number 4, when he says, "Now listen to this man (Juror #4), he knows what he's talking about.")Expository writing. Often bare assertions are given instead of evidence or support for a point. A student essay might read: "Though some people don't agree that smoking causes cancer, they are wrong and that's all there is to it."
13Bandwagon Appeal (Impressing with large numbers) Assumes that “if everybody’s doing it, it must be good/ right/ okay”
14Examples of bandwagon appeal: “McDonald’s Hamburgers, billions sold”Have you seen Spiderman III? The lines at the theatre are a block long! It must be really good!
15Remember: everybody does it is the opposite of thinking for yourself.
16Appeal to traditionArgues “this is how it has been done in the past” as a reason for why something should continue to be done
17Of course racial segregation is best for our state Of course racial segregation is best for our state. We have had racial segregation in the South for over 100 years and no one has talked about changing it in all that time. So, it has got to be good.
18Appeals to False Authority An arguer claims he/ she is knowledgeable enough in a subject to make a judgment, but actually is not.Often used in advertising
19Examples of to appeals to false authority: Actresses selling cosmeticsAn Olympic athlete selling an over-the-counter or prescription drug
20Appeal to IgnoranceArguer claims something has been proven based on a lack of evidence disproving it.
21Examples of appeals to ignorance: You can’t prove that other forms of life don’t exist in the universe. Therefore, other forms of life must exist in the universe.Nobody has proven that Clarence has not been stealing churros from the concession stand. Therefore, Clarence must be stealing churros.
22Appeal to EmotionAttempt to manipulate an emotional response in place of a valid or compelling argument.This sort of "reasoning" is very common in politics and it serves as the basis for a large portion of modern advertising.
23Appeal to Emotion, continued Appeals to emotion include appeals to fear, envy, hatred, pity, pride, and more.It's important to note that sometimes a logically coherent argument may inspire emotion or have an emotional aspect, but the problem and fallacy occurs when emotion is used instead of a logical argument, or to obscure the fact that no compelling rational reason exists for one's position.
24Bill goes to hear a politician speak Bill goes to hear a politician speak. The politician tells the crowd about the evils of the government and the need to throw out the people who are currently in office. After hearing the speech, Bill is full of hatred for the current politicians. Because of this, he feels good about getting rid of the old politicians and accepts that it is the right thing to do because of how he feels.
25The new PowerTangerine computer gives you the power you need The new PowerTangerine computer gives you the power you need. If you buy one, people will envy your power. They will look up to you and wish they were just like you. You will know the true joy of power. TangerinePower.
26Ad hominemAn ad hominem argument is any kind of argument that criticizes an idea by pointing something out about the people who hold the idea rather than directly addressing the merits of the idea.''Ad hominem'' is Latin for "directed toward the man (as opposed to the issue at hand)"
27Kerin would be a weak school board member Kerin would be a weak school board member. She’s a ginger and, even worse, she’s a Baptist!Senator Randolph: "These feminists are wrong about the Equal Rights Amendment. They're just a small band of braless bubbleheads.