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Logical Fallacies
If you think the title is an oxymoron, read on.
Logic is the theory of deductive and inductive arguments and
differentiates sound from flawed reasoning. Logical fallacies
are faults in analysis that lead to illogical statements.
Logical fallacies tend to occur most often when ideas are
being argued: more specifically for us, within papers. Each
of the logical fallacies explained indicates ways that arguments
can be flawed.
Depending on the source, fallacies bear various names. The
most common and most referenced are ad hominess, appeal to
antiquity, bifurcation, circular argument, false cause, faulty
generalization, loaded words, non sequitur, and red herring.
Ex: "If I don't pass this theology course, I won't
be a competent pastor."
One course does not make or break anyone. Life will go
on.
- Circular Argument: claiming the same
idea merely by
using different words
Ex: "African-American men have had to deal with
a lot of racism because for many years they have been
discriminated against."
Racism is a form of discrimination thus forming a circular
argument which continues to loop back around to the
original premise.
- False Cause: assuming that just because
two events are related, one caused the other
Ex: "Church attendance has declined since the
invention of television."
It is true that church attendance has declined since
the 1950s, but there are probably many reasons, other
that the invention of TV.
- Faulty generalization: generalizing from
insufficient evidence
Ex: " All seminary professor's heads are in the
clouds. The three that I have had so far sure are!"
Three examples is not a large enough sampling for a generalization
about thousands of professors.
- Loaded words: creating an emotional reaction
by using prejudice language
Ex: "The bureaucrats on the church board have decided
that we don't need a youth pastor."
The word bureaucratic carries the negative connotation
of an organization that is inflexible.
- Non Sequitur: stating a conclusion that
does not follow from the premise
Ex: "We shouldn't use our minds to study the Bible.
After all we already have 2,300 denominations, and even
divisions within those denominations." Critically
studying the Bible has nothing to do with the presence
of several thousand denominations, nor their factionist
natures.
- Red Herring: inserting an irrelevant
subject to throw the discussion off target
Ex: "You say that the death penalty is not a deterrent
to crime. What about the victims of crime? Should their
taxes pay to keep the criminal in jail?"
The switch to the victims leads away from the premise
that the death penalty is not a deterrent to possible
future criminal actions.
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