Intro to Logic: Core Ideas Flashcards

A complete set of practice flashcards in Question and Answer style reviewing key definitions, propositional properties, argument diagramming, validity vs. soundness, and philosophical concepts from the Intro to Logic lecture.

How is a proposition defined in the Intro to Logic lecture?

A proposition is defined as a declarative statement that is either true or false.

Which types of sentences are omitted from being classified as propositions?

Questions, exclamations, and rhetorical remarks are omitted from being classified as propositions.

What are the two qualities and two quantities of propositions?

The two qualities are affirmative and negative, and the two quantities are universal and particular.

What are the four standard types of propositions in formal logic?

Universal affirmative, universal negative, particular affirmative, and particular negative.

What is the distinction between an argument and an explanation?

An argument provides supporting reasons to convince an audience to accept a disputed claim, whereas an explanation accounts for a known fact and does not aim to prove a disputed claim.

What are the three equivalent formulations that define a deductive argument?

(1) The conclusion follows by necessity from the premises; (2) it is impossible for the premises to be true and the conclusion false; and (3) the premises provide conclusive grounds for accepting the conclusion.

When is a deductive argument considered sound?

An argument is sound if and only if it is valid and all of its premises are true.

What is the Chapter 2 preview method for diagramming arguments?

Number the propositions, identify the ultimate conclusion, and diagram the support relations as a graph of premises leading to the conclusion.

What is the step-by-step procedure for using a Venn diagram as a validity test?

Draw circles for terms (S, M, P), diagram the premises, cross out non-overlaps, and check if the conclusion is already implied.

How is truth defined in the classical tradition of St. Thomas Aquinas versus standard logical analysis?

In standard logical analysis, truth is a property of propositions that correspond or fail to correspond to reality; in St. Thomas Aquinas / classical tradition, truth is defined as the correspondence between idea and thing.

How does the lecture define the philosophical concept of perspectivism regarding truth?

Perspectivism is a proposed middle view stating that truth depends on perspective, but different perspectives vary in epistemic worth.

What pedagogical approach does the instructor reference for learning argument analysis?

A stepwise, Cope(y)/Copey-style approach emphasizing practice with diagramming and problem sets.

What thinkers and key concepts are introduced in the brief philosophical extensions?

Heraclitus (hoikoloi), Socrates (knowing you don't know), Bergson (intuition and co-existence with inner life), and Aristotle (arete/excellence).

What topics will be emphasized on the upcoming quiz scheduled for Sep 3?

The quiz on Sep 3 will emphasize definitions and basic classifications, including proposition, premise, conclusion, deductive vs. inductive, and validity.