A Class Room Logic: Deductive and Inductive, with Special Application to the Science and Art of TeachingMcNair, George Hastings
Philosophy
A Class Room Logic: Deductive and Inductive, with Special Application to the Science and Art of Teaching
McNair, George Hastings
Logic
Completed and arranged the argument becomes:
No teacher should do as other people do,
You are a teacher,
∴ You should not do as other people do.
Surely the major premise demands proof.
(2) _Reasoning in a Circle_ (_Circulus in probando_).
This form of begging the question occurs, “When a conclusion is based
upon a premise which in an earlier stage of the argument was itself
based upon this very conclusion.” To put it in another way: Reasoning
in a circle involves proving the truth of a conclusion by using a
particular premise, and then proving the truth of the particular
premise by using the conclusion. From premise to conclusion and from
conclusion to premise completes the circle.
_Examples of begging the question by reasoning in a circle_:
(a) It is wrong because my conscience pricks me, and my conscience
pricks me because it is wrong.
(b) “The effeminate walk shows a lack of force; because no forceful
man walks that way.”
(c) Says Hamilton, “Plato, in his _Phoedo_, demonstrates the
immortality of the soul from its simplicity; and in the
_Republic_, he demonstrates its simplicity from its immortality.”
(3) _Question Begging Epithets and Appellations._
This is the fallacy of assuming the point at issue by means of a
carefully selected epithet.
Scientists sometimes assume to clarify an inexplicable phenomenon by
giving it a technical name. Politicians are exceedingly free with their
epithets and appellations, and the records of religious disputes prove
that the theologian often resorted to this device.
_Examples of begging the question by using epithets and appellations_:
(a) We must attribute the disease to _heredity_.
(b) The candidate for governor is an _animated feather duster_.
(c) They call him _Blue Charlie_.
(d) It is the policy of the _big stick_.
(e) The _muck-raker_ seldom makes an efficient servant of the people.
It is seen that the use of these epithets and appellations is simply a
rhetorical device for the purpose of creating either a favorable or
unfavorable impression.
=8. OUTLINE.=
THE LOGICAL FALLACIES OF DEDUCTIVE REASONING.
(1) A negative aspect of definition of logic.
(2) Paralogism and sophism.
Distinguished. Mission of Socrates.
(3) A division of the deductive fallacies.
More or less faulty. Aristotle’s phraseology retained.
Division given.
(4) General divisions explained.
Formal and material. Material fallacies in _language_ and in
_thought_.
(5) Fallacies of immediate inference.
Opposition, obversion, conversion, contraversion.
(6) Fallacies in language (also fallacies of equivocation).
Ambiguous middle――distinguished from four terms.
Amphibology.
Accent.
Composition――“all” a pitfall.
Division.
Figure of speech.
Public-domain text, read in full here on John Shaqi.
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