Exam 2 Stuff Flashcards
Syllogism
simplest possible mediate inference; consists of 3 terms (minor, major, middle); consists of 2 premises; requires proper arrangement to be valid
Middle Term
the term that is in both premises but not in the conclusion
Minor Term
subject of the conclusion
Major Term
predicate of the conclusion
Minor Premise
the premise with the minor term
Major Premise
premise with the major term
Rule 1
can only have 3 terms
Rule 2
can only have 3 propositions/statements
Rule 3
the middle term must be distributed at least once
Rule 4
an undistributed term in a premise can NOT become distributed in the conclusion
Rule 5
cannot have two negative premises
Rule 6
if there is one negative premise the conlusion must be negative
If the subject is universal…
the subject is distributed
If the subject is particular…
the subject is undistributed
If the predicate is affirmative…
the predicate is undistributed
If the predicate is negative…
the predicate is distributed
Strong Argument
is one in which it is probable (but not necessary)
that, if the premises are true, then the conclusion is true.
Weak Argument
is one in which it is not probable that, if the premises
are true, then the conclusion is true.
Cogent Argument
is a strong argument in which all of the premises
are true(kinda like being sound)
Uncogent Argument
is one that is either weak or strong with at
least one false premise.
Deductive Logic
is the part of logic that is concerned with the study of methods
of evaluating arguments for validity and invalidity.
Inductive Logic
is the part of logic that is concerned with the study of methods
of evaluating arguments for strength and weakness.
Argument Against the Person/Ad Homien
Premises: Instead of providing a rational critique of a statement (or argument),
attack the person who advances it.
Conclusion: The statement is false or dubious. (Or the argument is unsound
or uncogent.)
Straw Man Fallacy
Premises: A misrepresentation of the view is false.
Conclusion: The view itself is false.
Appeal to Force / Ad Baculum
Premises: You can avoid harm by accepting this statement.
Conclusion: This statement is true
Appeal to the People/ Ad Populum
Premises: You will be accepted or valued if you believe this statement.
Conclusion: This statement is true.
Appeal to Pity or Ad Mesiercordiam
Premises: You have reason to pity this person (or group).
Conclusion: You should do X for the benefi t of this person (or group),
although doing X is not called for logically by the reason given.
Appeal to ignorance or Ad Ignoriaium
Premises: This statement has not been proven true.
Conclusion: This statement is false (or may be reasonably believed false).
Premises: This statement has not been proven false.
Conclusion: This statement is true (or may be reasonably believed true).
Red Herring
Premises: Something relevant to the topic at hand is described.
Conclusion: A distracting but often unnoticed change of subject occurs.
Begging the Question or petitio principii
Assuming the point to be proved. ( The premises are similar in content to the
conclusion but not better known than the conclusion.)
False Dilemma
Using a premise that unjustifi ably reduces the number of alternatives to be
considered
Appeal to Unreliable Authority / ad verecundiam
Appealing to an authority when the reliability of the authority may reasonably
be doubted. ( The arguer assumes, without suffi cient warrant, that the authority in question is reliable.)
False Cause Fallacy
Illegitimately assuming that one possible cause of a phenomenon is a (or the)
cause although reasons are lacking for excluding other possible causes
Fallacy of Complex Question
Asking a question that illegitimately presupposes some conclusion alluded to
in the question
An affirmative If Then is invalid if…
the consequent (part after then) is put first
A negative If Then is invalid if…
antecedent (part after if) is put first
Either/Or is invalid when…
you say yes to S but deny R
First Formula
conformity to universible law; basically means that your view is right if it can be applied to everyone and be right
Second Formula
treating others as ends in themselves; basically means to treat others as valuable and not as mere means
Duties of Justice
things that we should never do; we should never do harm
Duties of Beneficence
basically means helping others in some ways but depends on the situation and is not something that is always followed (unlike duties of justice)