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LESSON 3 · The Logic of Arguments

Your Soundness Checklist

Run any argument through these steps:

  • Map the structure — name the premises and the conclusion
  • Check validity — does the conclusion have to follow from those premises?
  • Check truth — are the premises actually true, and what backs them up?
  • Hunt hidden premises — many arguments skip a step that only seems obvious

Call it sound only if every check passes. This one habit — separating validity from truth — is your best defense against slick reasoning that sounds right and isn't.