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Why Logic Fails

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Logic is a formal system of rational thought that is useful for problem solving, decision making and strategy formation. Despite its usefulness, logic has limits and can be wrong. In some areas, logic may not be as useful as other techniques such as heuristics or thought processes such as imagination. The following are common failures and limitations of logic.

Motivated Reasoning

Using logic to justify what you want as opposed to using logic to determine a strategy.

Fallacies

Errors in logic known as fallacies.

Fallacy Fallacy

Assuming that a conclusion is wrong simply because someone has developed a illogical argument for it.

Ludic Fallacy

Logic based on game theory and probability theory that underestimates the complexity and unpredictability of the real world.

Cold Logic

Misuse of logic to handle situations that aren't purely logical such as art, culture and social interaction.

Illogical Success

A tendency for strategies that don't appear to be logical to be successful nonetheless in areas such as politics. In many pursuits and professions, a purely logical approach doesn't typically work.

Practical Approximations

Logic may miss practical approaches such as heuristics that are useful but not completely correct.

Partial Truth

Many systems of logic deal only with true and false. Such logic can't handle grey areas that are commonly understood by rational thought. Fuzzy logic can handle partial truths.

Divergent Thinking

Logic is most useful for processes of convergent thinking, or finding the correct answer to a problem. It isn't as useful for creating ideas that don't yet exist or novel solutions.

Thinking

This is the complete list of articles we have written about thinking.
Abductive Reasoning
Abstract Thinking
Abstraction
Aesthetics
Analogy
Analysis Paralysis
Analytical Thinking
Anomie
Argument
Argument From Silence
Arrow Of Time
Assertions
Automaticity
Backward Induction
Base Rate Fallacy
Benefit Of Doubt
Big Picture
Brainstorming
Call To Action
Catch 22
Causality
Choice Architecture
Circular Reasoning
Cognition
Cognitive Abilities
Cognitive Biases
Cold Logic
Collective Intelligence
Complexity Bias
Concept
Consciousness
Constructive Criticism
Convergent Thinking
Counterfactual Thinking
Creative Tension
Creeping Normality
Critical Thinking
Culture
Curse Of Knowledge
Decision Fatigue
Decision Framing
Decision Making
Defensive Pessimism
Design Thinking
Divergent Thinking
Educated Guess
Emotional Intelligence
Epic Meaning
Essential Complexity
Excluded Middle
Failure Of Imagination
Fallacies
Fallacy Fallacy
False Analogy
False Balance
False Dichotomy
False Equivalence
First Principles
Formal Logic
Four Causes
Fuzzy Logic
Gambler's Fallacy
Generalization
Golden Hammer
Good Judgement
Grey Area
Groupthink
Heuristics
Hindsight Bias
Hope
Idealism
Ideas
If-By-Whiskey
Illogical Success
Imagination
Independent Thinking
Inductive Reasoning
Inference
Influencing
Informal Logic
Information
Information Cascade
Introspection
Intuition
Inventive Step
Learning
Lifestyle
Logic
Logical Argument
Logical Thinking
Ludic Fallacy
Magical Thinking
Meaning
Mental Experiences
Mental State
Mindset
Misuse of Statistics
Motivated Reasoning
Natural Language
Nirvana Fallacy
Norms
Not Even Wrong
Objective Reason
Objectivity
Opinion
Overthinking
Perception
Personal Values
Perspective
Positive Thinking
Practical Thinking
Pragmatism
Premise
Problem Solving
Proof By Example
Propositional Logic
Prosecutor's Fallacy
Radical Chic
Rational Thought
Realism
Reality
Reason
Reasoning
Red Herring
Reflective Thinking
Reification
Relativism
Salience
Scarcity Mindset
Scientism
Selective Attention
Serendipity
Situational Awareness
Sour Grapes
State Of Mind
Storytelling
Subjectivity
Systems Thinking
Thinking
Thought Experiment
Unknown Unknowns
Visual Thinking
Want To Believe
Whataboutism
Win-Win Thinking
Wishful Thinking
Worldview
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Logic

A few logic terms explained.

Law Of Excluded Middle

A classical law of logic first established by Aristotle.

Fuzzy Logic

Logic that allows for partial truths.

Logic vs Intelligence

The difference between logic and intelligence.

Causality

The definition of causality with examples.

Magical Thinking

The definition of magical thinking with examples.

Scientism

The definition of scientism with examples.

Fallacies

A list of logical fallacies.

Mutually Exclusive

The definition of mutually exclusive with examples.

False Balance

The definition of false balance with examples.

Human Factors

A list of human factors in design.

Value Sensitive Design

An overview of value sensitive design.

Human Readable

A definition of human readable.

Error Tolerance

A definition or error tolerance with examples.

Decision Fatigue

The definition of decision fatigue with examples.

Demographics

The definition of demographics with examples.

Pessimism

The definition of pessimism with examples.

Achieved Status

The definition of achieved status with examples.

Human Condition

The definition of the human condition with examples.

Words For Emotion

A list of words for emotion.
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