Think Again I: How to Understand Arguments

Walter Sinnott-Armstrong and Ram Neta teach how to recognise valid and invalid arguments, spot common fallacies, weigh evidence, and build sound reasoning — analysing real arguments from politics, science and business rather than abstract puzzles. It is clear and accessible rather than dry.

What it does not do is teach a specific technical or professional skill — it is general critical thinking, so if you want a job skill or you already study formal logic, it is not the right fit. The certificate needs a paid Coursera subscription; the free audit covers the learning, and the reasoning skills remain relevant.

This Duke University course teaches the fundamentals of logical reasoning and argumentation: recognizing valid and invalid arguments, identifying common logical fallacies, evaluating evidence and inferences, and constructing well-reasoned arguments.