What is the Socratic Method (Elenchus)?

A dialectical method of inquiry based on asking probing, targeted questions to cross-examine definitions, stimulate critical thinking, and expose internal contradictions in beliefs.

How are moral virtues acquired according to Aristotle?

Through continuous habituation (hexis) and practical repetition; by repeatedly performing just and temperate acts, an individual internalizes virtuous character dispositions.

What defines an inductive argument, and what makes it cogent?

An inductive argument establishes that its premises make the conclusion probable rather than certain; it is cogent if the argument is inductively strong AND all its premises are factually true.

Explain the informal fallacy of False Dilemma (False Dichotomy).

Presenting two alternative options as the only possible choices when in reality valid intermediate or alternative choices exist.

Explain the informal fallacy of Post Hoc Ergo Propter Hoc.

Mistakenly concluding that because event Y occurred after event X, event X must have been the direct cause of event Y.

What defines a deductive argument, and what makes it valid?

A deductive argument claims that if premises are true, the conclusion must follow with absolute logical necessity; it is valid if the truth of the premises strictly guarantees the truth of the conclusion.

What is the Socratic view of human wisdom in Plato's Apology?

In Plato's Apology (21d), Socrates concludes that his wisdom consists in epistemic humility—not thinking he knows what he does not know (popularly paraphrased as 'I know that I know nothing').

Explain the informal fallacy of Appeal to Unqualified Authority (Argumentum Ad Verecundiam).

Citing an alleged authority figure to validate an argument when the cited person lacks expertise in the specific subject under dispute.

Define Aristotle's concept of Eudaimonia in the Nicomachean Ethics.

Human flourishing, well-being, or the highest good achieved by living an entire lifetime of rational activity in full accordance with virtue (arete).

Explain the formal fallacy of Denying the Antecedent.

An invalid argument structure: If P, then Q; not P; therefore, not Q (e.g., 'If you study, you pass; you didn't study; therefore you won't pass').

Describe Plato's Tripartite Model of the Soul in The Republic.

The human soul consists of three components: Reason (logos, seeking truth and wisdom), Spirit (thumos, seeking honor and courage), and Appetite (epithumia, biological desires for pleasure and food).

What is the difference between validity and soundness in deductive logic?

Validity refers strictly to logical structure (if premises were true, conclusion must follow); soundness requires both a valid logical structure AND that all premises are factually true.

List Aristotle's Four Causes that explain the nature and change of any substance.

Material Cause (what it is made of), Formal Cause (its form, essence, or design), Efficient Cause (the agent or force that produced it), and Final Cause (its telos, goal, or purpose).

What does Aristotle consider the defining, essential function (ergon) of a human being?

Activity of the soul in accordance with reason, distinguishing humans from plants (nutritive soul) and animals (sensitive/appetitive soul).

Explain Aristotle's Doctrine of the Mean in moral virtue.

In Nicomachean Ethics II.6, moral virtue is a character disposition aiming at the intermediate relative to us—determined by practical wisdom (phronesis)—between two vices of excess and deficiency (e.g., courage between recklessness and cowardice), though some actions and passions are inherently base and admit no mean.

Explain the informal fallacy of Equivocation.

Using an ambiguous word or phrase in two completely different senses within the premises and conclusion of a single argument.

State the valid deductive rule of Modus Ponens.

If P, then Q; P is true; therefore, Q is true (affirming the antecedent).

Explain the informal fallacy of Ad Hominem.

Rejecting the truth or logical support of a claim by attacking the speaker's character, background, or motives rather than addressing the argument itself. (By contrast, questioning a witness's credibility or conflict of interest can be relevant when evaluating testimony.)

Explain the informal fallacy of the Slippery Slope.

Asserting without evidential or causal justification that taking a modest initial step will inevitably lead to a chain of disastrous consequences.

Why did Plato advocate that philosophers must be kings in the ideal Polis (Kallipolis)?

Because only philosophers possess genuine knowledge of the Form of the Good and virtue rather than fleeting opinion (doxa), ensuring rule by truth rather than selfish ambition.

What is abductive reasoning (inference to the best explanation)?

A form of logical inference that starts with an observation or set of facts and selects the hypothesis that most likely and comprehensively accounts for evidence.

State the valid deductive rule of Disjunctive Syllogism.

Given an inclusive disjunction 'Either P or Q' (P v Q) and 'not P' (~P), conclude 'Q' (and similarly, from P v Q and ~Q, conclude P).

State the classical logical Law of Excluded Middle.

In classical bivalent logic, every proposition is either true or false, with no third truth value: P v ~P. (Some non-classical systems, such as intuitionistic or many-valued logics, reject its universal application.)

Explain Plato's Theory of Forms (Ideas).

The metaphysical doctrine that non-physical, immutable, eternal, and perfect transcendent archetypes (Forms) represent the truest reality, whereas sensible physical objects are imperfect, transient copies.

State the valid deductive rule of Modus Tollens.

If P, then Q; not Q (Q is false); therefore, not P (denying the consequent).

What does Telos mean in Aristotelian metaphysics and natural philosophy?

An entity's end, function, or final cause—the characteristic form or developmental goal toward which a natural organism or artifact is directed (functioning as an internal principle of nature rather than conscious deliberation in non-rational things).

Explain the formal fallacy of Affirming the Consequent.

An invalid argument structure: If P, then Q; Q is true; therefore, P is true (e.g., 'If it rains, streets are wet; streets are wet; therefore it rained').

Distinguish between Actuality (entelecheia / energeia) and Potentiality (dynamis) in Aristotle's philosophy.

Potentiality is the capacity to develop into a certain state (e.g., an acorn has the potentiality to become an oak tree); Actuality is the complete realization and fulfillment of that inherent nature.

Explain the informal fallacy of Begging the Question (Petitio Principii).

A circular reasoning error where the premises assume or take for granted the truth of the conclusion they are supposed to prove.

What central allegory in Plato's Republic illustrates the human transition from sensible illusion to intelligible truth?

The Allegory of the Cave, where chained prisoners mistake cast shadows on a subterranean wall for reality until one prisoner escapes into the sunlit world of true Forms.

Explain the informal fallacy of the Straw Man.

Misrepresenting, oversimplifying, or exaggerating an opponent's actual argument to make it easier to attack and refute.

State the classical logical Law of Non-Contradiction.

Contradictory propositions cannot both be true simultaneously in the exact same sense: ¬(P ∧ ¬P).

Formal & Informal Logical Fallacies, Argumentation & Classical Philosophical Foundations

32 critical-thinking and philosophy review cards on deductive validity, inductive cogency, abduction, formal fallacies (affirming the consequent, denying the antecedent), informal fallacies, Socratic inquiry, Platonic Forms, and Aristotelian logic and ethics.

Level: basic
Languages: en → en
Cards: 32
Markdown: Formal & Informal Logical Fallacies, Argumentation & Classical Philosophical Foundations (.md)

Flashcards (32)

#	Front (Term / Question)	Back (Definition / Answer)
1	What is the Socratic Method (Elenchus)?	A dialectical method of inquiry based on asking probing, targeted questions to cross-examine definitions, stimulate critical thinking, and expose internal contradictions in beliefs.
2	How are moral virtues acquired according to Aristotle?	Through continuous habituation (hexis) and practical repetition; by repeatedly performing just and temperate acts, an individual internalizes virtuous character dispositions.
3	What defines an inductive argument, and what makes it cogent?	An inductive argument establishes that its premises make the conclusion probable rather than certain; it is cogent if the argument is inductively strong AND all its premises are factually true.
4	Explain the informal fallacy of False Dilemma (False Dichotomy).	Presenting two alternative options as the only possible choices when in reality valid intermediate or alternative choices exist.
5	Explain the informal fallacy of Post Hoc Ergo Propter Hoc.	Mistakenly concluding that because event Y occurred after event X, event X must have been the direct cause of event Y.
6	What defines a deductive argument, and what makes it valid?	A deductive argument claims that if premises are true, the conclusion must follow with absolute logical necessity; it is valid if the truth of the premises strictly guarantees the truth of the conclusion.
7	What is the Socratic view of human wisdom in Plato's Apology?	In Plato's Apology (21d), Socrates concludes that his wisdom consists in epistemic humility—not thinking he knows what he does not know (popularly paraphrased as 'I know that I know nothing').
8	Explain the informal fallacy of Appeal to Unqualified Authority (Argumentum Ad Verecundiam).	Citing an alleged authority figure to validate an argument when the cited person lacks expertise in the specific subject under dispute.
9	Define Aristotle's concept of Eudaimonia in the Nicomachean Ethics.	Human flourishing, well-being, or the highest good achieved by living an entire lifetime of rational activity in full accordance with virtue (arete).
10	Explain the formal fallacy of Denying the Antecedent.	An invalid argument structure: If P, then Q; not P; therefore, not Q (e.g., 'If you study, you pass; you didn't study; therefore you won't pass').
11	Describe Plato's Tripartite Model of the Soul in The Republic.	The human soul consists of three components: Reason (logos, seeking truth and wisdom), Spirit (thumos, seeking honor and courage), and Appetite (epithumia, biological desires for pleasure and food).
12	What is the difference between validity and soundness in deductive logic?	Validity refers strictly to logical structure (if premises were true, conclusion must follow); soundness requires both a valid logical structure AND that all premises are factually true.
13	List Aristotle's Four Causes that explain the nature and change of any substance.	Material Cause (what it is made of), Formal Cause (its form, essence, or design), Efficient Cause (the agent or force that produced it), and Final Cause (its telos, goal, or purpose).
14	What does Aristotle consider the defining, essential function (ergon) of a human being?	Activity of the soul in accordance with reason, distinguishing humans from plants (nutritive soul) and animals (sensitive/appetitive soul).
15	Explain Aristotle's Doctrine of the Mean in moral virtue.	In Nicomachean Ethics II.6, moral virtue is a character disposition aiming at the intermediate relative to us—determined by practical wisdom (phronesis)—between two vices of excess and deficiency (e.g., courage between recklessness and cowardice), though some actions and passions are inherently base and admit no mean.
16	Explain the informal fallacy of Equivocation.	Using an ambiguous word or phrase in two completely different senses within the premises and conclusion of a single argument.
17	State the valid deductive rule of Modus Ponens.	If P, then Q; P is true; therefore, Q is true (affirming the antecedent).
18	Explain the informal fallacy of Ad Hominem.	Rejecting the truth or logical support of a claim by attacking the speaker's character, background, or motives rather than addressing the argument itself. (By contrast, questioning a witness's credibility or conflict of interest can be relevant when evaluating testimony.)
19	Explain the informal fallacy of the Slippery Slope.	Asserting without evidential or causal justification that taking a modest initial step will inevitably lead to a chain of disastrous consequences.
20	Why did Plato advocate that philosophers must be kings in the ideal Polis (Kallipolis)?	Because only philosophers possess genuine knowledge of the Form of the Good and virtue rather than fleeting opinion (doxa), ensuring rule by truth rather than selfish ambition.
21	What is abductive reasoning (inference to the best explanation)?	A form of logical inference that starts with an observation or set of facts and selects the hypothesis that most likely and comprehensively accounts for evidence.
22	State the valid deductive rule of Disjunctive Syllogism.	Given an inclusive disjunction 'Either P or Q' (P v Q) and 'not P' (~P), conclude 'Q' (and similarly, from P v Q and ~Q, conclude P).
23	State the classical logical Law of Excluded Middle.	In classical bivalent logic, every proposition is either true or false, with no third truth value: P v ~P. (Some non-classical systems, such as intuitionistic or many-valued logics, reject its universal application.)
24	Explain Plato's Theory of Forms (Ideas).	The metaphysical doctrine that non-physical, immutable, eternal, and perfect transcendent archetypes (Forms) represent the truest reality, whereas sensible physical objects are imperfect, transient copies.
25	State the valid deductive rule of Modus Tollens.	If P, then Q; not Q (Q is false); therefore, not P (denying the consequent).
26	What does Telos mean in Aristotelian metaphysics and natural philosophy?	An entity's end, function, or final cause—the characteristic form or developmental goal toward which a natural organism or artifact is directed (functioning as an internal principle of nature rather than conscious deliberation in non-rational things).
27	Explain the formal fallacy of Affirming the Consequent.	An invalid argument structure: If P, then Q; Q is true; therefore, P is true (e.g., 'If it rains, streets are wet; streets are wet; therefore it rained').
28	Distinguish between Actuality (entelecheia / energeia) and Potentiality (dynamis) in Aristotle's philosophy.	Potentiality is the capacity to develop into a certain state (e.g., an acorn has the potentiality to become an oak tree); Actuality is the complete realization and fulfillment of that inherent nature.
29	Explain the informal fallacy of Begging the Question (Petitio Principii).	A circular reasoning error where the premises assume or take for granted the truth of the conclusion they are supposed to prove.
30	What central allegory in Plato's Republic illustrates the human transition from sensible illusion to intelligible truth?	The Allegory of the Cave, where chained prisoners mistake cast shadows on a subterranean wall for reality until one prisoner escapes into the sunlit world of true Forms.
31	Explain the informal fallacy of the Straw Man.	Misrepresenting, oversimplifying, or exaggerating an opponent's actual argument to make it easier to attack and refute.
32	State the classical logical Law of Non-Contradiction.	Contradictory propositions cannot both be true simultaneously in the exact same sense: ¬(P ∧ ¬P).