Post Hoc Fallacy: Why Correlation Is Not Causation
Introduction and Formal Definition The Latin phrase Post Hoc Ergo Propter Hoc translates literally to “following this, therefore due to this.” This term names a fundamental type of logical fallacy, specifically a fallacy of questionable cause, where the mere temporal sequence of two events is erroneously taken as proof of a causal relationship. It is […]
Formal Fallacies: Unmasking Hidden Logical Errors
Introduction to Formal Fallacies The term Formal Fallacy designates a profound structural defect within deductive arguments, signifying a violation of fundamental principles intrinsic to formal logic. Unlike errors rooted in content, ambiguity, or empirical falsehood, a formal fallacy is exclusively concerned with the argument’s form, rendering the conclusion logically disconnected from the premises, regardless of […]
Arbitrary Inference: Why Your Brain Jumps to Conclusions
Defining Arbitrary Inference Arbitrary Inference stands as a fundamental cognitive distortion within the framework of cognitive behavioral therapy (CBT), specifically delineated by psychologist Aaron Beck. It refers precisely to the psychological process wherein an individual arrives at a definitive conclusion despite having either insufficient, absent, or, critically, actively contradictory evidence supporting that claim. This error […]
Logical Fallacies: Why Your Brain Gets Logic Wrong
Introduction and Formal Definition The logical error known as Denying the Antecedent is a formal fallacy committed when one argues that because the antecedent (the “if” clause) of a conditional statement is false, the consequent (the “then” clause) must also be false. This reasoning structure is fundamentally flawed because the truth of a conditional statement […]
False Cause: Why Your Brain Sees Patterns That Aren’t There
FALSE CAUSE: Introduction and Definition The fallacy of False Cause, known formally as Non Causa Pro Causa, represents one of the most fundamental and pervasive errors in informal logic and reasoning, holding significant implications across scientific, philosophical, and everyday discourse. This fallacy is fundamentally characterized by the erroneous assumption that a temporal sequence of events […]
Ad Hominem: Why We Attack People Instead of Ideas
Definition and Etymology of the Ad Hominem Fallacy The term Ad Hominem, originating from Latin meaning “to the man” or “to the person,” refers to a logical fallacy wherein an argument is presented as legitimate or illegitimate not based on the merits, evidence, or logical consistency of the argument itself, but rather due to the […]
Appeal to Ignorance: Why Absence of Proof Isn’t Truth
AD IGNORANTIUM (AD IGNORANTIAM) The logical fallacy known formally as Argumentum ad Ignorantiam, or the Appeal to Ignorance, represents a critical error in reasoning where the truth or falsehood of a claim is asserted solely on the basis of a lack of contradictory evidence. This principle holds that a proposition must be accepted as factual […]
Ad Misericordiam: The Psychology of Pity
designating a kind of casual misconception or a coaxing technique where support for the facts of a disagreement are grounded in an appeal to compassion or understanding. AD MISERICORDIAM: “Defense strategies often employ the use of ad misericordiam tactics, especially when a jury is involved.”
Post Hoc Fallacy: Why Correlation Does Not Imply Causation
Introduction and Definitional Scope The Post Hoc Fallacy, formally known in Latin as post hoc ergo propter hoc—meaning “after this, therefore because of this”—is one of the most pervasive and fundamental logical errors encountered in reasoning, statistics, and experimental design. Fundamentally, this fallacy involves the erroneous inference that because event B occurred immediately following event […]
Logical Fallacies: Using Absurdity to Sharpen Your Reasoning
Definition and Etymology of Reductio Ad Absurdum The concept of Reductio Ad Absurdum represents a cornerstone of logical reasoning and argumentation, serving as a powerful and legitimate technique by which a proposition or principle is either disproven or decisively affirmed. This method operates fundamentally on the principle of consistency; it asserts that any statement which […]
Causism: Why Your Brain Sees Patterns That Don’t Exist
Definition and Etymology of Causism Causism is defined within psychological and philosophical discourse as the persistent and often habitual propensity to attribute definitive causal relationships between disparate events or phenomena, even when empirical evidence is insufficient, contradictory, or entirely absent. This cognitive error involves a premature leap from correlation or mere temporal succession to established […]
The Contradiction Principle: Why Your Brain Craves Order
The Contradiction Principle in Psychology Defining the Contradiction Principle The Contradiction Principle, primarily interpreted within the realm of cognitive and social psychology, describes the fundamental human drive to maintain coherence and consistency among one’s beliefs, attitudes, and behaviors. At its core, it posits that when an individual simultaneously holds two or more conflicting ideas, values, […]
Nominal Fallacy: Why Naming Things Isn’t Understanding
Nominal Fallacy The Core Definition of Nominal Fallacy The nominal fallacy, often interchangeably referred to as the reification fallacy, constitutes a significant logical error wherein a person assigns a label to an object, concept, or behavior without a robust basis in objective reality. At its simplest, it involves mistaking a name or a descriptive label […]
Sophistry: The Psychology of Deceptive Persuasion
Sophistry: Deceptive Reasoning and its Historical Trajectory Introduction: Unpacking the Essence of Sophistry Sophistry, at its core, is a form of deceptive reasoning that intentionally employs logical fallacies and manipulative rhetoric to support a viewpoint or argument, often with the underlying goal of obscuring the truth or misleading an audience. It is not merely a […]