Logic / Unit 1 Logic 028 short lesson, about 20 seconds
Truth, Validity, Soundness: The Map
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The idea
Truth applies to statements. Validity applies to argument forms. Soundness applies to whole arguments. Three properties, three different bearers.
In practice
A statement is never "valid." An argument is never "true." A form is never "sound."
Where people slip
Policing this vocabulary in your own speech is the fastest way to internalize the distinctions.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
Unlocks
- Nothing yet depends on this.
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