Building an Argument and More Fallacies
Course: INDP 170
Instructor: Professor Zarit
Agenda
Reminders
Basics of building an argument
More flawed arguments and fallacies
Reminders
Quiz - do the readings and study the slides
For Monday, read Chapter 4
Discussion on Arguments
Previous discussion focused on what constitutes bad arguments.
Current question: What makes a good argument?
Rules of Arguments
Logical Order: Arguments should present ideas in a coherent, logical sequence to aid understanding.
Reliable Premises: Arguments must start from premises that are trustworthy and fact-based.
Concrete and Concise: Avoid vague language; arguments should be straightforward and to the point.
Reliable Premises Example
Premises:
“Anybody could be a zombie.”
“Zombies are always looking to eat the brains of the living.”
Conclusion: “Therefore, you should always be ready for a zombie attack.”
Being Concrete and Concise
Example of Vague Statement:
Original: “I seem to have the distinct impression that my canine companion and I are no longer physically located within the geographical confines of the midwestern American state generally known as Kansas.”
Shorter Version Needed: Simplifying this phrase for clarity is essential.
Further Examples of Conciseness
Another Example of Vague Statement:
Original: “At a point in time subsequent to the present point in time, I will once again be in the location where I am presently located.”
A concise version would improve clarity.
Picking Up Previous Discussions: Fallacies
Fallacies under consideration include:
Ad populum
Appeal to authority
Circular reasoning
Complex question
Equivocation
Straw man
Ad hoc
Fallacy 1: Ad Populum
Definition:
Appeals to the emotions of a crowd rather than rational arguments.
Common expressions:
“Everybody is doing it.”
“Lots of people are saying that this is true.”
Fallacy 2: Appeal to Authority
Structure of Argument:
“According to person 1, who is an expert on the issue of Y, Y is true.”
Conclusion: “Therefore, Y is true.”
Example:
Richard Dawkins states that evolution is true.
Importance: Not just his acclaim; what matters is the evidence supporting evolution.
Clarification:
Listening to experts is important, but their claims must be supported by evidence.
Not all self-proclaimed experts provide valid or substantiated claims.
Fallacy 3: Circular Reasoning
Description:
An argument that begins and ends at the same point without progression.
Example:
“You can count on News One for facts because their motto is 'we just give you the facts'.”
Additional examples:
“This email is legitimate because you can trust this and all further emails from me.”
“It is illegal because it is against the law.”
Fallacy 4: Complex Question
Definition:
A question framed in a way that traps the respondent into agreeing with a presupposed claim.
Example Questions:
“Are you still as self-centered as you used to be?”
“How long had you contemplated this robbery before you carried it out?”
Fallacy 5: Straw Man
Definition:
Refers to creating a caricatured version of an opposing view to easily attack it.
Common Example:
Claim that all vegans are opposed to any form of animal captivity, implying they would never own a pet.
Dialogue Example:
Person A: “We need some non-Christmas songs at the holiday concert.”
Person B: “Why do you hate Christmas?”
Fallacy 6: Ad Hoc
Definition:
An ad hoc fallacy occurs when new, often unsubstantiated reasons are created to explain away a failed argument or outcome.
Example Conversations:
Student 1: “I really should have gotten an A for the exam.”
Student 2: “You got several questions wrong, though.”
Student 1: “That must be because the teacher is a jerk.”
Psychic example for the ad hoc reasoning illustrating denial of direct evidence for supernatural claims.
Activity Proposal
Activity structure:
Form groups of 3-5 people.
Select one of the discussed fallacies: Ad populum, Appeal to authority, Circular reasoning, Complex question, Straw man, Ad hoc.
Choose two fallacies and create unique example scenarios for each selected fallacy.
Grounds vs. Warrants
Grounds (Data/Evidence):
The specific facts or evidence supporting a claim, which forms the foundation of an argument.
Example: “Studies show teeth are 50% whiter after using this product.”
Warrant (Bridge/Assumption):
The logical or often unstated connection linking the grounds to the claim, explaining why the evidence is relevant.
Example: “People want whiter teeth” to support the desire for purchasing the product.
Grounds and Warrant Example (From Purdue)
Grounds:
“You hear barking and howling in the distance.”
“Dogs are animals that bark and howl.”
Warrant:
The conclusion derived from grounds and warrant is that “There are dogs nearby.”
Sample Question 1
Inquiry:
“Students who attend class regularly tend to earn higher grades than students who miss class frequently.”
Claim: “Colleges should encourage consistent class attendance as a way to improve student academic performance.”
Break down the components:
Grounds: Regular attendance allows students to hear core explanations, ask questions, and partake in discussions that reinforce course material.
Warrant: The implication that engaging with material through attendance correlates with better performance.
Conclusion: Consistent attendance leads to improved academic performance.
Sample Question 2
Task:
Identify the fallacy in the following statement and explain why it is correct:
“Everyone I know agrees that this campus policy is fair. It’s widely supported by students, so it clearly works. Therefore, anyone who disagrees is probably overthinking the issue.”
Final Reminders for Monday
Upcoming Quiz
Reading Assignment: Read Chapter 4 in the specified text (Best book).
Next Discussion Topic: Causation vs. causality.