Argument Guidelines and Avoiding Logical Fallacies

Argument Advice and Guidelines

Argument is concerned with questions of judgment, not taste

  • Judgment is joined to the logical and reasonable
  • It's best to reveal points often overlooked
  • It's a good idea to define your terms so your audience
    knows exactly what you are talking about. [consult a
    dictionary if you need]

Having a Debatable Point

  • You need an argumentative edge.
  • The main point/assertion--Thesis statement--must be open
    to dispute and able to be viewed from more than one side.
  • Statements of fact are not debatable, neither are
    statements about personal tastes and preferences.
  • A point is Debatable if no amount of reasoning by an
    expert or support by statistics can prove the truth or
    fallacy of the statement.

Supporting the Claim

  • Offer the reader convincing reasons why your position is
    X because of Y.
  • Choose reasons carefully to move your audience
  • If you use outside sources (as this assignment requires),
    choose reliable and authoritative ones.
  • Use hard evidence [facts] and not soft evidence
    [opinion].
  • Conclusions based on soft evidence will often not stand
    up to scrutiny.

To Argue a Point Persuasively You Must do the Following

  • Offer convincing reasons
  • Arguments only as good as the reasons used to support it.
  • You have to make your readers agree with you, or at least
    see the point you are making
  • Use only the best evidence.

Appeal to Reason

Induction

  • Often you will use induction to reach a generalization
    [informed opinion] and then that generalization can be
    used deductively to reach a conclusion.
  • The major premise must be acceptable, minor premise must
    be verifiable, and the argument is not overstated.
  • Induction is from Latin inducere for "to lead,"
    to draw along: reasoning from specific evidence to a
    general conclusion to move from the specific instances to
    the generalizations necessary to make a point and to
    establish the cause or causes of something.
  • The act, process, or result or an instance of reasoning
    from a part to a whole, from particulars to generals or
    from the individual to the universal. Specific instances
    which lead to a generalization.
  • Don't make generalizations too sweeping.

Deduction

  • Applying a proven generalization to a specific case,
    using generalizations to arrive at a specific conclusion.
    .
  • The conclusion is arrived at inductively, so induction is
    used often times to set up deductive arguments.
  • The generalization must be accepted and the specific
    instance must be a fact for the conclusion to be
    accurate.
  • Illogical deductive arguments usually result from a
    faulty major premise or inaccurate generalization.

Syllogism

  • Syllogism comes from the Greek "syllogismos"
    for 'to calculate with words'.
  • A deductive scheme of formal argument consisting of a
    major premise, a minor premise and a conclusion.
  • Moves from general to specific. major premise

Syllogism

If 'A' is True Major Premise/

Generalization
All Humans are Mortal Every Virtue is Laudable
And 'B' is True Minor Premise/

Specific Instance
John is a Human Kindness is a Virtue
'C' Must be True Conclusion John is Mortal Kindness is Laudable

Toulmin Model

  • Combination of inductive and deductive reasoning schemes.
  • Concerned more with probability than certainty. See the
    following examples.

    Claim

  • Equivalent to the conclusion or what the writer wants to
    prove;

    Data

  • The information or evidence a writer offers in support of
    the claim;

    Warrant

  • A general statement that establishes a trustworthy
    relationship between the data and the claim. Leads to
    conclusion that is probably true.
  • Claim and data must be specific/explicit

    Assumptions
    underlie this warrant

  • (such as that the data is valid)
  • Be prepared to back up warrant.

Toulmin Model of Logic

Claim Conclusion Raymond is an American citizen
Data Minor Premise Raymond was born in Puerto Rico
Warrant Major Premise Anyone born in Puerto Rico is an
American citizen

The warrant is false because a French tourist who has a child
while vacatioining in Puerto Rico may chose between American and
French citizenship for their child.

Claim Conclusion Raymond is probably an American
citizen
Data Minor Premise Raymond was born in Puerto Rico
Warrant Major Premise Anyone born in Puerto Rico is entitled
to American citizenship

Here the warrant is accurate given the above information and
the reasoning is logical given the information. The warrant
establishes a trustworthy relationship between the Data and the
Claim.


Distinguish Hard from Soft Evidence

  • Hard evidence equal facts; soft evidence consists of
    opinion.
  • Base conclusions on hard evidence.
  • Avoid showy, deceptive conclusions These seem correct at
    first, but rarely are. Often based on soft evidence or
    ignores important variables--which is why scientific
    studies are done in several populations and placebos are
    given.

Avoid Faulty Generalizations

  • Something true in one case need not be true in all cases:
    Blondes have more fun, television is worthless, money
    buys happiness.
  • Often these are stereotypes.
  • Often are based on insufficient or irrelevant evidence or
    they are too broad and sweeping
  • Often these faulty generalizations are based on
    stereotypes.

Avoid Begging the Question

  • Happens when you assume that a debate's premise
    underlying your assertion has already been demonstrated
    to be true, so you beg your reader to take your word for
    it, trust me you say.
  • You assume what you are arguing to be the case can be
    used as evidence to make that case.
  • Occurs when you assume that a debatable premise
    underlying the point you want to make has already been
    proven.
  • These arguments assume that what the arguer is supposed
    to be proving is already accepted as having been proven.

Avoid Avoiding the Question

  • Often done with an emotional appeal to distract reader
    from the real issue.
  • An appeal to pity, fear, normalcy, flattery, patriotism,
    or snob appeal.
  • Avoids the real issue with material that is irrelevant or
    which clouds the issue by making an irrational appeal to
    the emotions.

Avoid Bandwagon Approach

  • Everyone is doing it, why can't I? Gets readers to agree
    by claiming that everyone else agrees.
  • Following the crowd avoids the real issue.

Avoid Attacking the Opponent

  • Name calling or other derogatory statements about their
    character ignores the real question and exposes a weak
    position.

Avoid Faulty Causal Argument

  • Causes can have more than one effect, so make sure the
    link is solid and demonstrable.
  • Often the result of oversimplification, suggesting
    relationships that don't exist, the ignoring of evidence
    which may run counter to the argument being made, and
    denying the real reasons.

Avoid Imposing Either/Or Fallacy

  • Leaves out all but the extremes of thespectrum.
  • Occurs when the issue is reduced to the two extremes.
  • Eliminates all middle ground because you are either for
    or against.

Proper Appeals to Emotion

  • Such emotional appeals require showing empathy and
    identifying with your reader's feelings.
  • Identify with your opposition's feelings and point of
    view.

Acknowledge Opposing Views

  • Show respect for the opposition and what is valid about
    their argument.
  • Acknowledge the merit of other opinions.

Maintain a Moderate Tone

  • When you act like you are the only authority, then many
    people will be turned off by what you have to say no
    matter how valid and important your material.
  • Don't be belligerent, telling anyone who doesn't side
    with you that they are fools and being duped by the
    opposition.

Recognizing Flaws in Persuasion and Argument

Bogus Claims

  • Claims are bogus or false when the persuader promises
    more than he or she can prove beyond dispute.

Loaded Terms

  • Terms are loaded when they are asked to carry more
    emotional weight than the context can legitimately
    support: Bush regime, Marxist President Salvador Allende,
    Unnecessary adjectives wealthy candidate used to turn the
    unwealthy away from the candidate.

Misrepresentation

  • Lies, twisting what others have said through
    oversimplification
  • Complex argument reduced to ridicule--ask for evidence to
    support claims.
  • Use quotes within their context.

The above Three Terms Represent the Qualities of Propaganda.