Critical Thinking

Correlation vs Causation: Why Association Is Not Proof

An introduction to the distinction between correlation and causation — why association does not establish cause, the errors that follow from confusing them, and how science tests causal claims.

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What Is a Cognitive Bias? The Mind's Systematic Shortcuts

An introduction to cognitive bias — the systematic, predictable deviations from rational judgment — from Bacon's idols of the mind to Kahneman and Tversky's heuristics and biases program.

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What Is a Logical Fallacy? The Recurring Errors of Argument

An introduction to logical fallacies — the systematic patterns of defective argument that appear sound — from Aristotle's sophistical refutations to modern informal logic and argumentation theory.

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What Is Critical Thinking? The Art of Reasoning Well

An introduction to critical thinking — the disciplined practice of analyzing, evaluating, and improving reasoning — its history, core skills, and why it matters in the age of information.

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Clarity: Meaning, Philosophy & Wisdom

A philosophical exploration of clarity as the lucid grasp of thought, reality, and self, tracing it through Descartes' rationalist method, Wittgenstein's logical analysis, and the broader epistemological demand for transparent understanding.

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Curiosity

Curiosity is the active desire to know what is unknown — the restless intellectual appetite that drives inquiry, exploration, and the pursuit of understanding for its own sake, beyond any immediate practical need.

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Doubt: Meaning, Philosophy & Wisdom

Doubt is the philosophical practice of withholding assent from beliefs that lack sufficient justification, serving as the engine of critical inquiry, the foundation of methodical skepticism, and the guardian of intellectual honesty throughout the history of thought.

wisdom

Rationality

A philosophical exploration of rationality as the capacity for reason-based thought and action, from Greek logos through Kantian reason to contemporary debates about bounded rationality.

wisdom

Reason

A comparative philosophical exploration of reason as the distinctive human faculty through Greek philosophy, Stoic living, and Kantian critical examination.

wisdom

Daniel Kahneman: Two Systems, the Remembering Self, and Happiness

An evidence-led introduction to Daniel Kahneman, the Nobel-winning psychologist who showed that the mind runs on two systems, that we judge lives by moments, and that what we remember of experience is not what we lived.

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Charles Sanders Peirce: Philosophy, Quotes & Legacy

Explore Charles Sanders Peirce's philosophy of pragmatism, semiotics, and the pragmatic maxim. Discover the founder of American pragmatism and his theory of signs.

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Francis Bacon

Francis Bacon was an English philosopher and statesman who pioneered empiricism and the inductive method, arguing that knowledge must be built from systematic observation and experiment.

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John Dewey

A comprehensive introduction to John Dewey, the American philosopher who extended pragmatism into instrumentalism, transformed educational theory, and argued that democracy is a way of life grounded in shared inquiry.

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René Descartes

French philosopher and mathematician whose method of systematic doubt established a new foundation for knowledge and inaugurated modern philosophy.

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Aristotle

An evidence-led introduction to Aristotle, the fourth-century BCE Greek philosopher whose work shaped ethics, logic, metaphysics, and accounts of human flourishing.

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Socrates

A historically careful introduction to Socrates, the Athenian philosopher portrayed in Plato and Xenophon as a practitioner of ethical inquiry.

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Thinking, Fast and Slow

An evidence-led guide to Daniel Kahneman's Thinking, Fast and Slow: the two systems of the mind, the heuristics and biases that shape judgment, prospect theory, and the two selves that disagree about happiness.

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Discourse on the Method

A philosophical guide to Descartes's Discourse on the Method, examining its four rules of reasoning, methodical doubt, and the foundations of rationalist philosophy.

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Informal Logic

An introduction to informal logic — the study of the norms of everyday argumentation, including fallacies, argument schemes, and the evaluation of reasoning in natural language.

philosophy

Epistemology

An introduction to epistemology as the philosophical study of knowledge, examining justification, belief, truth, skepticism, and the limits of human understanding from Descartes through contemporary debates.

philosophy

Skepticism

Skepticism is a philosophical tradition that questions the possibility, scope, and justification of knowledge, challenging dogmatic claims through systematic doubt, suspension of judgment, and rigorous examination of the limits of human understanding.

philosophy

Pragmatism

An introduction to pragmatism as the American philosophical tradition that evaluates ideas by their practical consequences, from Peirce through James and Dewey to Rorty.

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Critical Thinking & Logic: A Learning Path Through Reasoning, Fallacies & Scientific Method

A structured learning path through critical thinking, logic, and scientific reasoning — from the laws of valid inference and common fallacies to the scientific method and the cognitive biases that undermine good judgment.

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