Adult tool
Valid vs Sound Checker
Valid means the conclusion follows. Sound means valid and the premises are true.
Definition
An argument is valid when the conclusion must follow if the premises are true. It is sound when it is valid and the premises are actually true. Validity is about structure; soundness is about structure plus truth.
Many persuasive-sounding claims are invalid (the conclusion does not follow) or valid but unsound (a false premise). Inductive arguments are judged strong or weak rather than valid or sound.
From the book
Chapter 3–5 in Think Straight, Argue Better — practice here, then return to the chapter examples.
Practice
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