Monday, January 29, 2018

PHI 101 Part 2 Reasoning

Rowan College Blackboard

http://www.rcbc.edu/blackboard

Part 2 Straw Man Fallacy

Descartes to Kant PP

On Blackboard, download and read the files: 

"Hume on Perceptions," "Do You Exist?," and "Giles Buddhism."

THE LEADING SOURCE FOR PROS & CONS OF CONTROVERSIAL ISSUES

https://www.procon.org/

For Assignment 1.1: Conflicting Viewpoints Essay Part 1

Due in Bb by 11:59 pm Thursday 15 February.

Part 2 Group work Due Tuesday 13 February: one paragraph answering one of the 1-4 questions of assigned reading in textbook. The questions are self-assigned and decided within your small group. Type and bring a hard copy to discuss within your small group on Tuesday.


Learning objectives: one, find a colleague whose name you may not know (ask if you do not) so you learn another colleague's name. 

Two, this person must not have addressed the same selection or question that you wrote about so you learn something about another selection in Part 2. 

Three, review whether the person followed the directions of the assignment: is the assignment typed? Did the person write one paragraph?

Perhaps most importantly, read your colleague's paragraph but do not have your colleague explain anything about their paragraph. Read it silently. With your editor's pen in hand comment on the mechanics of the selection and note, by writing on your colleague's paper, any questions that you have.


After you have written corrections, comments, and made notes on their paragraph feel free to discuss their answer.


You should now know at least your own selection that you answered and at least one other selection from Part 2.

Review

What is the coolest car in the world? Year, Make, Model, and Series


We have two sheets of paper circulating for each class: Attendance and the "conch." For civil discourse the "conch" represents order.

Lord of the Flies (2/11) Movie CLIP - Whoever Holds the Conch Gets to Speak (1990) HD, 1:12

https://youtu.be/ipkF3xkP63M



How to Read Philosophy (in your own words how do you do this?)

Laptops Are Great, Guidelines, and Email Etiquette.

As a class we had a conversation about electronics during class. We agreed to self-limit our access so as to be considerate of our colleagues and not distract them.

Studies and by our own experience electronics have been detrimental to a sound learning environment.

Dedicate yourself to learning well and being considerate of others

You should finish reading, if not already, Part 1: Introduction (in the textbook).

What two things was Socrates accused of that led to his death?

Why do you think Socrates did not object to his death sentence?

In your life, what would eudaimonia be like?

Eudaimonia (Greek: εὐδαιμονία [eu̯dai̯mo'níaː]), sometimes anglicized as eudaemonia or eudemonia /juːdɪˈmoʊniə/, is a Greek word commonly translated as happiness or welfare; however, "human flourishing" has been proposed as a more accurate translation.

Analogy of the Cave

Learning Objectives for Part 2 Reasoning, Logic Unit:

4:02

https://m.youtube.com/watch?v=Mh3Kk5tZSmo


The philosophers who defined the study of philosophy and logic.

Description of Logic

Unstated assumptions

Syllogism

True vs. Valid Arguments

After the Logic Unit PP I will introduce Part 2 Reasoning.

Also, I will introduce the Values Clarification Worksheet. 


1. Am I living my life today in alignment with my values?


2. Am I interacting with others today in alignment with my values?


3. Am I prioritizing and making decisions today in alignment with my values?


Part 2 Reasoning Learning Objectives

Logic

Premise

Identifying Premises and Conclusions

Deductive and Inductive

Logical Fallacies

Necessary and Sufficient Conditions

Scientific Method

Readings in Part 2 Reasoning

Part 2: Reasoning





Logic


Logic (from the Ancient Greek: λογική, logikḗ), originally meaning "the word" or "what is spoken" (but coming to mean "thought" or "reason"), is generally held to consist of the systematic study of the form of arguments.

A valid argument is one where there is a specific relation of logical support between the assumptions of the argument and its conclusion. (In ordinary discourse, the conclusion of such an argument may be signified by words like therefore, hence, ergo and so on.)


There is no universal agreement as to the exact scope and subject matter of logic, but it has traditionally included the classification of arguments, the systematic exposition of the 'logical form' common to all valid arguments, the study of inference, including fallacies, and the study of semantics, including paradoxes.

Historically, logic has been studied in philosophy (since ancient times) and mathematics (since the mid-1800s), and recently logic has been studied in computer science, linguistics, psychology, and other fields.


What is Logic? (Philosophical Definition), 5:51


A definition of Logic as a field of philosophy, as well as several types of logic studied in philosophy, including second order logic, non-classical Logic, and modal logic.


https://youtu.be/ZPfw422Wcso




premise


A premise is a statement that an argument claims will induce or justify a conclusion.

In other words, a premise is an assumption that something is true. In logic, an argument requires a set of (at least) two declarative sentences (or "propositions") known as the premises or premisses along with another declarative sentence (or "proposition") known as the conclusion.

This structure of two premises and one conclusion forms the basic argumentative structure. More complex arguments can use a series of rules to connect several premises to one conclusion, or to derive a number of conclusions from the original premises which then act as premises for additional conclusions. An example of this is the use of the rules of inference found within symbolic logic.


Aristotle held that any logical argument could be reduced to two premises and a conclusion.

Premises are sometimes left unstated in which case they are called missing premises, for example:

Socrates is mortal because all men are mortal.


It is evident that a tacitly understood claim is that Socrates is a man. The fully expressed reasoning--known as the categorical syllogism--is thus:


All men are mortal,

Socrates is a man,

Socrates is mortal.


In this example, the independent clauses preceding the comma (namely, "all men are mortal" and "Socrates is a man") are the premises, while "Socrates is mortal" is the conclusion.

The proof of a conclusion depends on both the truth of the premises and the validity of the argument.


Identifying Premises and Conclusions, 5:34


Before you can analyze an argument you need to be sure that you've clearly identified the conclusion and the premises. This video discusses some of the challenges associated with this task.


https://youtu.be/07mehbgE5jc





deductive-inductive


Inductive reasoning (as opposed to deductive reasoning or abductive reasoning) is reasoning in which the premises are viewed as supplying strong evidence for the truth of the conclusion.

While the conclusion of a deductive argument is certain, the truth of the conclusion of an inductive argument may be probable, based upon the evidence given.


Many dictionaries define inductive reasoning as the derivation of general principles from specific observations.


The philosophical definition of inductive reasoning is more nuanced than simple progression from particular/individual instances to broader generalizations.

Rather, the premises of an inductive logical argument indicate some degree of support (inductive probability) for the conclusion but do not entail it; that is, they suggest truth but do not ensure it.

In this manner, there is the possibility of moving from general statements to individual instances (for example, statistical syllogisms, discussed below).

What is an Inductive Argument? 1:41


In this video we introduce the concept of an "inductive argument" as this term is commonly used in logic and philosophy (see my other video on "Induction and Science" for a discussion of how scientists commonly use the term, and it compares with the usage given here).


https://youtu.be/affFHkV4kNo





Deductive reasoning, also deductive logic, logical deduction is the process of reasoning from one or more statements (premises) to reach a logically certain conclusion.

It differs from inductive reasoning.

Deductive reasoning links premises with conclusions. If all premises are true, the terms are clear, and the rules of deductive logic are followed, then the conclusion reached is necessarily true.


Deductive reasoning (top-down logic) contrasts with inductive reasoning (bottom-up logic) in the following way: In deductive reasoning, a conclusion is reached reductively by applying general rules that hold over the entirety of a closed domain of discourse, narrowing the range under consideration until only the conclusion(s) is left.

In inductive reasoning, the conclusion is reached by generalizing or extrapolating from specific cases to general rules, i.e., there is epistemic uncertainty. However, the inductive reasoning mentioned here is not the same as induction used in mathematical proofs – mathematical induction is actually a form of deductive reasoning.


What is a Deductive Argument? 2:18


This video introduces the concept of a "deductive argument" and how it relates to the logical concept of "validity".


https://youtu.be/oGNnzfsfUAs





Ninety Second Philosophy: Deductive vs Inductive Arguments, 1:32

A quick video explaining the difference between deductive and inductive arguments.


Information for this video gathered from The Stanford Encyclopedia of Philosophy, The Internet Encyclopedia of Philosophy, The Cambridge Dictionary of Philosophy, The Oxford Dictionary of Philosophy and more!




Here it is handy to make a list of the examples of logical fallacies.


fallacies: petitio principii (begging the question)

To beg the question is to assume the truth of the conclusion of an argument in the premises in order for the conclusion to follow.

One of the simplest examples is the claim, "Paranormal activity is real because I have experienced what can only be described as paranormal activity."

In this example, the conclusion "Paranormal activity is real" is assumed to be true when the person argues that they have experienced what can only be described as paranormal activity.

Thus, the conclusion is assumed to be true in the premise.

If a person does not assume that "Paranormal activity is real" is true in the premise, as that is exactly what must be established, then the conclusion does not follow.

It is a type of circular reasoning and an informal fallacy, in which an arguer makes an argument that requires the desired conclusion to be true.

This often occurs in an indirect way such that the fallacy's presence is hidden or at least not easily apparent.


The term "begging the question", as it is usually phrased, originated in the 16th century as a mistranslation of the Latin petitio principii, which actually translates to "assuming the initial point". In modern vernacular usage, "to beg the question" frequently appears to mean "to raise the question" (as in, "This begs the question, whether...") or "to dodge a question". In contexts that demand strict adherence to a technical definition of the term, many consider these usages incorrect.

There is a good example of this fallacy in the textbook.

p. 53

"We must not drink liquor."
Why do you say that?
Drinking is against the will of Allah.
How do you know?
The Koran says so.
But how do you know the Koran is right?
Everything said in the Koran is right.
How do you know that?
Why, it's all divinely inspired.
But how do you know that?
Why, the Koran itself declares that it is divinely inspired.
But why believe that?
You've got to believe the Koran, because everything in the Koran is right."


This chain of reasoning is a more extended case of begging the question; the speaker is reasoning in a large circle, taking for granted one of the things that is supposed to be be proved


Are you Begging the Question? - Gentleman Thinker, 1:43


A common philosophical mistake! Have you told somebody that they've begged the question? Did you use the term correctly? Gentleman Thinker playlist: https://www.youtube.com/watch?v=94YV6...


https://youtu.be/OAXKc-rvMa8





complex question

Complex Question (Logical Fallacy), 1:37

Two or more questions are asked but they are disguised as one.

A short explanation of the Logical Fallacy of Complex Question (Fallacy February & 90 Second Philosophy)


https://youtu.be/BRflpIUqYiI





ad hominem

Ad hominem (Latin for "to the man" or "to the person"), short for argumentum ad hominem, is where an argument is rebutted by attacking the character, motive, or other attribute of the person making the argument, or persons associated with the argument, rather than attacking the substance of the argument itself.


However, its original meaning was an argument "calculated to appeal to the person addressed more than to impartial reason".


Fallacious ad hominem reasoning is normally categorized as an informal fallacy, more precisely as a genetic fallacy, a subcategory of fallacies of irrelevance.


However, in some cases, ad hominem attacks can be non-fallacious; i.e., if the attack on the character of the person is directly tackling the argument itself. For example, if the truth of the argument relies on the truthfulness of the person making the argument—rather than known facts—then pointing out that the person has previously lied is not a fallacious argument.


The Ad Hominem Fallacy | Idea Channel | PBS Digital Studios, 2:22


https://youtu.be/IVFK8sVdJNg




black and white thinking (either-or fallacy), false dilemma.


A false dilemma is a type of informal fallacy in which something is falsely claimed to be an "either/or" situation, when in fact there is at least one additional option.


The options may be a position that is between two extremes (such as when there are shades of grey) or may be completely different alternatives.

Phrasing that implies two options (dilemma, dichotomy, black-and-white) may be replaced with other number-based nouns, such as a "false trilemma", "false tetralemma", or "false pentalemma" ("false trichotomy," "false tetrachotomy", "false pentachotomy", etc.) if something is reduced to only three, four, or five options.

A false dilemma can arise intentionally, when a fallacy is used in an attempt to force a choice or outcome. The opposite of this fallacy is false compromise.

The false dilemma fallacy can also arise simply by accidental omission of additional options rather than by deliberate deception.

Examples provide guidance: "Stacey spoke out against capitalism, therefore she must be a communist" (she may be neither).

"Roger opposed an atheist argument against Christianity, but he would say that, he's a Christian" (When it's assumed the opposition by itself means he's a Christian).

Roger might be an atheist who disagrees with the logic of some particular argument against Christianity. Additionally, it can be the result of habitual tendency, whatever the cause, to view the world with limited sets of options.

Some philosophers and scholars believe that "unless a distinction can be made rigorous and precise it isn't really a distinction".

An exception is analytic philosopher John Searle, who called it an incorrect assumption that produces false dichotomies.

Searle insists that "it is a condition of the adequacy of a precise theory of an indeterminate phenomenon that it should precisely characterize that phenomenon as indeterminate; and a distinction is no less a distinction for allowing for a family of related, marginal, diverging cases."

Similarly, when two options are presented, they often are, although not always, two extreme points on some spectrum of possibilities; this may lend credence to the larger argument by giving the impression that the options are mutually exclusive of each other, even though they need not be.

Furthermore, the options in false dichotomies typically are presented as being collectively exhaustive, in which case the fallacy may be overcome, or at least weakened, by considering other possibilities, or perhaps by considering a whole spectrum of possibilities, as in fuzzy logic.

The Black and White Fallacy | Idea Channel | PBS Digital Studios, 2:04

https://youtu.be/eqz53d-fYL8




False Dilemma, :24

A false dilemma fallacy on the TV show According to Jim.

https://youtu.be/Dln3DJEcghY



Orange Slice commercial 1988 "You either got it, or you don't!" :29

Orange Slice commercial from 1988. I ripped this from an old VHS tape I have, and did the best with the quality that I could.

https://youtu.be/mkULHzFpvmw



Necessary and sufficient conditions.

In logic, necessity and sufficiency are implicational relationships between statements.

The assertion that one statement is a necessary and sufficient condition of another means that the former statement is true if and only if the latter is true. That is, the two statements must be either simultaneously true or simultaneously false.

CRITICAL THINKING - Fundamentals: Necessary and Sufficient Conditions [HD], 3:14

In this video, Kelley Schiffman (Yale University) discusses one of the most basic tools in the philosophers's tool kit: the distinction between necessary and sufficient conditions.

Through the use of ordinary language glosses and plenty of examples this mighty distinction is brought down to earth and presented in a ready-to-use fashion.

https://youtu.be/5LqNm9d2__I




Scientific method

Steps of the Scientific Method as on Ongoing Process



The Big Bang Theory Scientific Method Clip Season 6 Episode 5, :53

https://youtu.be/_7sSuhQ1_24



Scientific Method Monty Python, 5:27

https://youtu.be/k2MhMsLn9B0



Straw Man Fallacy, 2:11

The Straw Man Fallacy misrepresents or simplifies an argument to ensure that it is easier to knock over. 

It is thought that the usage of the term in rhetoric suggests a human figure made of straw that is easy to knock down or destroy—such as a military training dummyscarecrow, or effigy. Roman soldiers trained by attacking straw men who clearly could not attack back. 

https://m.youtube.com/watch?v=cGZkCPo7tC0



Part 2 Reasoning selections from the textbook:

The Scope of Logic
Wesley C. Salmon

Improving Your Thinking
Stephen F. Barker

Necessary and Sufficient Conditions
Steven M. Cahn

Thinking to Some Purpose
L. Susan Stebbing

Pushover Arguments
Scott F. Aikin and Robert B. Talisse

Fixing Belief
Morris R. Cohen and Ernest Nagel

Scientific Inquiry
Carl G. Hempel

Antiscientism
Gillian Barker and Philip Kitcher


Note: none of this section is germane until introduced during class. 

Learning Community Assignments

Learning objective: be sure to have finished reading all the selections in part two of the textbook by the end of the week.


Review a colleague's paragraph.


With the same partner each of you discuss the pro-con issue addressed.


Premise


https://m.youtube.com/watch?v=jzmZhJmHMsw

For Discussion today find a partner who wrote a paragraph on a different selection from Part 2 of the textbook that you did not work on. With your partner explain the selection that you were assigned to answer.


Kindly bring a hard copy of your Pro-Con paper to class on Wednesday.




Learning objective: explain premise in your own words and provide an example. Explain inductive and deductive reasoning and provide examples.

Explain your assigned question selection from Part 2 and one other question from Part 2 of the textbook.

If during the semester you have an example of how your six top values aided you personally or professionally let me know. I would like to hear about your experience.



Discussion: Refer to the six top values that you identified in our previous discussion.


In groups of four answer:



1. Am I living my life today in alignment with my values?


2. Am I interacting with others today in alignment with my values?


3. Am I prioritizing and making decisions today in alignment with my values?


Wednesday assignment: type a paragraph to be collected with your name on it and bring to class the next time we meet.


In groups of four each person in the group will type a paragraph answering one of the #1-4 questions for the assigned selection in Part 2. Each group of four students can self-assign which of the #1-4 questions they will answer for the assigned selection in Part 2.


I will assign each group a selection from Part 2 to answer.
Learning objectives: one, find a partner whose name you do not know so you learn another colleague's name. Two, this person must not have addressed the same selection or question that you wrote about so you learn something about another selection in Part 2. Three, review whether the person followed the directions of the assignment: is the assignment typed? Did the person write one paragraph?

Perhaps most importantly, read your colleague's paragraph but do not have your colleague explain anything about their paragraph. Read it silently. With your editor's pen in hand comment on the mechanics of the selection and note, by writing on your colleague's paper, any questions that you have.

After you have written corrections, comments, and made notes on their paragraph feel free to discuss their answer.








Next, we will review the first written assignment (Pro-Con argument) which is due Wednesday.