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
(6) Designate the premises and the conclusion in the following,
supplying any proposition which may be omitted, also arrange
logically and test the validity.
(1) “The people of this country are suffering from an overdose
of prosperity; consequently a period of hard times will be
a valuable lesson.” (The conclusion should be recast so as
to read, “A period of hard times will cure the people of
this country.” The minor premise is, “Those who suffer from
an overdose of prosperity may be cured by a period of hard
times.”)
(2) “I am a teacher; you are not what I am; hence you are not
a teacher.”
(3) “To kill a man is murder, therefore war is murder.”
(4) “You have not adopted the best policy since honesty has
always been and will always be the best policy.”
(5) “Since the road is criminally mismanaged, why should not
the authorities be indicted as criminals?”
(6) “Early to bed and early to rise makes a man healthy,
wealthy and wise. I am none of these; hence my sleeping
hours have been wrong.”
(7) Illustrate a weakened conclusion.
(8) Explain the exclusive proposition and indicate how the logician
should treat it.
(9) Arrange logically and test the following:
(1) Only weak men become intemperate, and Edgar Allen Poe was
surely intemperate.
(2) No admittance except on business; hence you cannot be
admitted.
(3) Virtuous acts are praiseworthy, and indiscriminate giving
is not a virtuous act.
(10) Explain why individual propositions are classed as universal.
(11) Write an argument whose major premise is a partitive proposition;
arrange logically and test validity.
(12) Arrange and test this argument: “Blessed are the poor in spirit:
for theirs is the kingdom of heaven.”
(13) Complete, arrange and test.
(1) “The object of war is to settle disputes; hence soldiers
are the best peacemakers.”
(2) “The various species of brutes being created to prey upon
one another proves that man is intended to prey upon them.”
(3) “The end of everything is its perfection; death being the
end of life is its perfection.”
(4) “All the trees of the yard make a thick shade and this is
one of them.”
(5) “Minds of moderate caliber ordinarily condemn everything
which is beyond their range, and his is such a mind.”
(6) “The best of all medicines are fresh air and sleep, and you
are sorely in need of both.”
(7) “Every hen comes from an egg; every egg comes from a hen;
therefore every egg comes from an egg.”
(8) “He cannot have been there――otherwise I should have seen
him.”
Public-domain text, read in full here on John Shaqi.
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