Basics
Reasoning/logic |
Aims at Persuading us by showing that a claim is true/reasonable |
Rhetoric |
Aims at persuading us by relying on our non logical physiological traits |
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→ Use |
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→ Mention |
Mention vs Use
Mention |
using the word not mentioning the definition |
Example |
CIA started to use waterboarding to refer to induced suffocation in the late 70s |
Use |
using the word to refer to the act |
Example |
I don't see anything wrong with water boarding |
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→ Non Rhetorical |
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→ Rhetorical |
Non Rhetorical VS Rhetorical
Non Rhetorical |
Wants a direct answer |
Rhetorical |
trying to make a point rather than get an answer |
Three types of Rhetorical Strategies |
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→ Content Directed |
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→ Subject Directed |
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→ Rhetorical Fallacies |
Premise examples
what is the unstated premise ? |
Anyone who has seen the movie knows that it’s terrible. So, you should know that it’s terrible. |
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You have seen the movie |
unstated premise |
1. ? 2. Mark is a human being 3. Therefore mark is mortal |
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? = all human beings are mortal |
Argument tips and hints
what is the unstated premise ? |
Anyone who has seen the movie knows that it’s terrible. So, you should know that it’s terrible. |
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You have seen the movie |
unstated premise |
1. ? 2. Mark is a human being 3. Therefore mark is mortal |
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? = all human beings are mortal |
example of an invalid argument |
1. Some Wisconsinites are rich 2. Some Wisconsinites are republicans Therefore, some republicans are rich |
Can we conclude from the fact that an argument is not sound that it is not deductively valid? |
No, from the fact that the argument is not sound we can conclude that either it is not valid or one of the premises is false. |
Is it possible to have a sound argument and a false conclusion? Why or why not? |
No. This is not possible. For an argument to be sound it must be (1) valid (if the premises are true then the conclusion must be true) and (2) it must have all true premises. (1) and (2) necessitate that a sound argument has a true conclusion. |
difference between inductive and deductive |
While the conclusion of an inductive argument can only be likely, a conclusion of a deductive argument is certain. |
Can we conclude from the fact that an argument is not sound that it is not deductively valid? |
No, from the fact that the argument is not sound we can conclude that either it is not valid or one of the premises is false. |
Example of a Valid deductive argument that contains a false conclusion. |
P1: If I go to the store, I will learn how to fly. P2: I went to the store. C: So I learned how to fly. |
Example of a Sound argument |
If a city is in Germany then it is in Europe. Cologne is in Germany. Therefore, it is in Europe. This argument is sound because: i) it is valid and ii) it’s premises are true. |
you can have multiple conclusions for something
A valid Argument can have a false conclusion AND a false premise
(North America example)
Things that are not arguments
List of Claims |
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We are fifteen years into this new century. Fifteen years that dawned with terror touching our shores; that unfolded with a new generation fighting two long and costly wars; that saw a vicious recession spread across our nation and the world. It has been, and still is, a hard time for many. But tonight, we turn the page. |
Conditionals |
An argument in which the premises, if true, demonstrate or establish the conclusion. |
Statement Format: "if - then - " |
✤If you drink more, you’ll have a hangover tomorrow. ✤If he has been stealing, then he deserves to be fired |
Casual Claims |
Causal claims identify the cause of something. They explain why something is the case or happens. |
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Argument John must love kale because he eats it a lot. Casual Claim Because John loves kale he eats it a lot. |
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Step 1. Find the two events, states or facts that are related in the claim. Step 2. Determine which one of the events, states or facts is typically the cause and which one is typically the effect of the other one. Step 3. Find the premise indicator. Step4. If what comes after the premise indicator is the effect, the statement is an argument. If what comes after the premise indicator is the cause then the statement is a causal clai |
words I don't know
Mixed rhetorical strategies |
Rhetorical strategies that can be used both directly and indirectly. Examples of such strategies include hyperbole and rhetorical Analogy. |
Parsimony Principles |
Principles according to which views that are simpler and posit fewer entities should be preferred to more complex views. |
Aristotle’s three modes of persuasion |
Ethos: Persuasion by the speaker’s personal attributes (reputation, accomplishments, expertise, looks, charisma) Pathos: Persuasion by arousing emotions with a skillful use of rhetoric. Logos: Persuasion by rational arguments and reasoning. |
Rhetorical Force |
The rhetorical force of an expression is its ability or power to express and elicit emotional and other psychological responses in the audience. Expressions can have almost identical literal meanings but different rhetorical forces. |
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Content Directed Strategies
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Aims at supporting or undermining an idea by presenting its content in a smart way that makes it more likely that we will accept or reject it. |
Indirect Content Based Strategies
Weaseling |
use words to help: (A) Protect a statement from criticism by weakening it. While (B) hoping the audience will still believe the stronger version *common terms: up to, some, perhaps, possibly |
Ex: |
loose up to 37 pounds in 28 days |
Downplaying |
speaker tells you something is the case but cleverly uses language to implicitly undermine its significance |
ex; |
Ex: mary has a mere high school diploma Ex: karl is a “professor” of mathematics |
Loaded Question |
Asking a question to make you believe it is true (humans are more likely to believe something when it is implied) |
ex |
Why does the president hate immigrants? Explicitly asks: why does the president hate immigrants? Implies: the president hates immigrants |
Indirect Hyperbole |
make an exaggerated or non exaggerated claim which gives it persuasive force |
ex |
Ex: I would kill myself before i eat at this restaurant again. You are saying something directly but you want people to believe what you are indirectly saying (I Don't want you to believe i want to kms I want you to believe that the food is bad.) OR She cooked so much food for her party; there was enough for an army! |
Innuendo |
says something explicitly but they also want you to believe something else that is NOT weaseling, downplaying, indirect hyperbole or preposition (more indirect - stressing certain words) |
Example 1 |
What do you think is being implied by the innuendo in this dialogue? In other words, how are things going for B? A: “How’s it going?” B: ” …it’s going.” (Answer things are not going well) |
Example 2 |
What do you think is being implied by the innuendo in this dialogue? Cicero: “[Marc Antony] is here now, in your hands. I am merely stating facts; I am not suggesting any particular course of action…” Brutus: “I will not take the course of action you’re not suggesting.” (answer killing Marc antony) |
Direct Content Based Strategies
Euphemisms |
Positive expression used in place of a negative expression with the same literal meaning in order to persuade the audience of a claim |
Example |
The fear that the new administration might reintroduce enhanced interrogation techniques is unjustified. |
Dysphemism |
negative expression used in place of a positive expression with the same literal meaning in order to persuade the audience of a claim |
Example |
Its wrong to give tax breaks to the obscenely rich |
Direct Hyperbole |
one exaggerates a claim hoping that the audience will be more likely to accept the exaggerated claim saying something explicitly is what you want them to believe |
Example |
Cable news has gone round the bend: the only thing you hear on Fox News is right-wing rant, and the only thing you hear on MSNBC are left-wing rants. |
Proof Surrogates |
support a claim by suggesting that there is agreement about it or that there is agreement about it or that there is strong support for it when there is not much agreement and existence of support is in dispute |
Example common phrases: widely accepted, recognized, it's obvious that, as we all know studies show |
The Great Depression of the 1930s was needlessly prolonged by government policies now recognized in retrospect as foolish and irresponsible. OR Obamacare is a disaster; you know it; I know it; they know it. |
Arguments and Main components
Series of statements that aim at proving rational reasons for believing in a claim |
claim |
any sentence that is true or false |
Rational Reasons: |
Reasons that show that a claim is true or more likely to be true |
Non-Rational Reasons: |
Reasons that are causes, Reasons that do not indicate the truth |
Premises: |
statements that are given in support of the conclusion |
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indicators : come before the premise Since, For, In view of, Because |
Conclusion |
Claim that the argument supports |
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Indicators: Thus, Therefore, Consequently, Hence, So, This implies that |
Reasoning |
Deductive reasoning: |
no new info in the conclusion premise = true -> conclusion true |
ex |
Validity: |
argument is valid when it is impossible for the premises to be true and the conclusions false |
ex |
Soundness: |
argument is valid if premises are true |
ex |
Inductive: |
new information is in the conclusion If premise is true conclusion might not |
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Subject Directed Strategies
aim at supporting/undermining an idea by supporting/undermining the proponents of the idea or the group that the idea is about |
Stereotype
Beliefs about a groups attributes that are often false, over-simplified, over-generalized or highly exaggerated |
→ Non Rhetorical |
assenting to a stereotype ( i agree w the generalization/just commenting on the stereotype) |
Examples |
new yorkers are rude, Jews are successful in business, Illegal immigrants are criminals, Only tree huggers believe in climate change. |
→ Rhetorical |
Supporting a claim about individuals by placing them within a stereotyped group to make a conclusion |
Examples |
I'm sure johns mom will be waiting outside she's a helicopter mom, Better hide the bottle before John arrives. He's irish! April is a study freak so I bet she got an A on the test |
Not all generalizations are stereotypes
Some rules
Often have socio-political implications
these are part of the explanation for why stereotypes exists
Most scientific generalizations are not stereotypes
Often essentialize feature that they attribute to a group
You don't have to have knowledge on whether something is false - but if it looks like a scientific claim it is less likely to be a stereotype.
EXAMPLE: THE JAPANESE ARE MORE PRONE TO HAVE BOWEL CANCER
Ad Hominem
rejecting a persons claim or position by attacking them |
→ Accusation of Inconsistency |
You tell me it’s dangerous to text when I’m driving but I have seen you doing it! (inconsistency between claim and behavior) You tell me that it’s dangerous to text while driving but just last week you were saying it isn’t! (inconsistency between claim and behavior) |
→ Questioning ones motivation |
li: What do you think about Betsy DeVos’ idea that replacing public schools with charter schools and the voucher system will help improve education? Kyle: Of course it’s a terrible idea! Didn’t you know that the DeVos family has made a lot of money by investing in K12, a company that manages charter schools? |
→ Personal Attack |
Mary: Dad says it’s dangerous to stay out after 11pm? Jack: It’s not. Dad’s just a control freak! |
OR "Jerry is just an idiot" |
→ Refuting By Association |
Using stereotype to disprove/refute claim |
Bob: You think banning guns will reduce gun violence? That sounds like what those left-wing university professors would say. Banning guns would actually make us less safe. |
*Do not confuse a personal attack with an ad hominem that uses a personal attack. |
Just a personal attack: Mark is a liar!/ Personal attack ad hominem Jasmine: Mark says he didn’t steal the car. Peter: He’s a liar! Of course, he did. |
Ad Hominem notes
What Makes It an Ad Hominem? When are motivations, inconsistencies, personal attributes or associations completely irrelevant to the evaluation of a claim and when are these factors relevant? Provide an example to explain your reasoning. |
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Motivations, inconsistencies, personal attributes or associations are relevant/irrelevant depending on the conclusion we are supposed to draw. When motivations, inconsistencies, personal attributes or associations are reasons to doubt the source of the claim or the claim itself, the ad hominem attack can be considered a reason to be cautious about accepting the claim. |
Diagramming Arguments
Diagramming represents the logical structure of an argument (what supports what) |
Step 1: |
find and label components of argument Use numbers (components are premises and conclusion ) |
Step 2: represent the rational components |
using arrows |
example |
Does Blank get support from the previous statements and does it provide support for any of the arguments |
connecting what premises give support to the previous statements and what statements provide the conclusions in the argument
Points on Diagramming
Structure vs. shape |
The structure of the diagram matters not the shape ( straight line vs weird pentagon - same thing) |
Embedded arguments |
Some complex arguments are embedded in other arguments |
One conclusion many arguments |
A complex argument can have multiple different arguments for a single conclusion |
One premise many conclusions |
One premise can be a reason for multiple conclusions |
co -operation |
Premises can work together |
Ambiguous structures |
Arguments can have ambiguous structures more than one way to get to a conclusion) diff arguments are divided by a line) |
Opposing reasons |
Some components can be reasons against other components Some things don't support anything in the argument (these are hashed out) |
Lines are only used for + when using two arguments for a conclusion - not a deep meaning
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Rhetorical Fallacies
Strawman |
claim is false by misrepresenting/distorting it to make it vulnerable to attack/easy to refute |
ex |
Alex: “I believe that some of the money for the defense budget should be reallocated to education spending.” Becca: “I can’t believe that you want to cut the paycheck of the brave men and women who fight to defend our country!" |
Line Drawing |
since there is no one way to define a concept or line between concept & opposite it should not be used |
ex |
It’s not clear how many people the planet can support. We should stop worrying about overpopulation.” |
Perfectionist |
assumes only available option is ideal or perfect |
ex |
“I don’t think we should sign him up for football. The odds of him getting into the NFL are slim to none.” |
False Dilemma |
assumes you only have two options |
ex |
You can either be straight edge or an addict, so you better not try any drugs or alcohol. |
Misplacing the burden of proof |
there is no proof for claim -> we should reject the claim |
ex |
Obviously, Clinton was lying about her emails. Can you prove she wasn't? •Since there is no proof that she wasn't lying, she was lying. •Since there is no proof that guns shouldn’t be outlawed they should be outlawed •Since there is no proof that ghosts don’t exist, they do exist. |
who has burden of proof |
legal principles, change, inherent credibility, parsimony principles (in cases of controversy both parties have burden of proof) |
begging the question |
offers a reason that is repacking the claim into a question |
ex |
The superiority of the Aryan race is proved by the inferiority of the other races, That God exists is proved by scripture because scripture is the word of God and thus cannot be fa |
THIS IS NOTHING (it j kept showing up) “I refuse to draw a line between your side of the room and mine. We should just respect
each other’s stuff!”
Rhetoric by Omission
Persuading someone to believe something by omitting necessary information |
sometimes information can change bc of definition changes, think aids example; more people weren't getting aids than before the definition was more inclusive to all types of aids
Demagoguery
A figure who exploits prejudice, fear and ignorance among the public in order to achieve and further his/her goals |
CORE Rhetorical Strategies |
Otherising |
Dividing people into in-groups and out-groups and viewing or treating the members of the out-group as inherently different from the members of the in group |
ex |
Nazis otherized jews, the Roma and homosexuals |
Demonizing |
Representing someone or members of a group as inherently evil or wicked in character. |
ex |
Nazi's demonized jews |
Scapegoating |
Blaming the members of the out group for the problems from which members of the in group suffer |
ex |
nazis scapegoat jews as responsible for economic hardship and as the reason germany lost ww1 |
Fear Mongering |
Invoking intense fear of the members of the out-group in the audience |
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Other Rhetorical strategies of demagogues |
Personal insult and Ridicule: |
often personally insult or ridicule those who disagree with them as an alternative to deliberation and reasoning |
Empty Promises: |
making a promise just for the sake of their effect on the audience and without any regard for the practical possibility of what is promised or sometimes without the intention to deliver it. |
Repetition: |
making the same point over and over in order to convince the audience to believe it |
suspending belief: |
avoidance of critical thinking or logic in examining something unreal or impossible in reality, such as a work of speculative fiction, in order to believe it for the sake of enjoyment |
Suspending your belief on something because you have some type of bias , you suspend your belief bc you can't make a full judgment |
Charitable
When possible, assume the best interpretation |
Example |
What the speaker says: Glen Beck said President Obama’s foreign policy is weak? But Glen Beck is an idiot! President Obama’s foreign policy is fine. What the speaker has in mind: Glen Beck said President Obama’s foreign policy is weak? But Glen Beck is an idiot! So, don’t give much weight to his opinion. |
Sometimes we do not fully articulate what we mean to say: If possible, assume the interpretation that does not attribute a fallacy to them. |
Be constructive
When possible show how a problem can be fix or avoided or give others a chance to explain or improve their reasons |
Help speaker Avoid ad hominem by offering a different conclusion |
Avoid non-constructive response: Glen Beck said President Obama’s foreign policy is weak? But Glen Beck is an idiot! President Obama’s foreign policy is fine. |
This is just an ad hominem!! |
Constructive response: I think that since John is known to be paranoid we shouldn’t believe on the basis of his report that Mary is having an affair. But we can’t conclude that Mary is not having an affair, can we? |
Be Informative
When possible, make the problematic assumptions explicit and focus the discussion on those |
Identify the problematic assumptions, Discuss the problematic assumptions, Discuss the premises of the valid deductive argument |
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