Knaph

Validity

An argument is valid when its conclusion must be true if its premises are true - a matter of structure, not of whether the premises are true.

Level 1 · Foundation

You can tell whether a conclusion follows necessarily from its premises.

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Levels of understanding

  1. 1

    Foundation

    You can tell whether a conclusion follows necessarily from its premises.

    Opens after

    Argument
  2. 2

    Deeper

    You recognize valid and invalid argument forms - like modus ponens and affirming the consequent - by their shape.

    Master level 1 first

    Conditional statementsThe classic valid and invalid forms are built from "if... then" statements - learn conditionals, then come back.

Your path here

What's still between you and Validity, level 1, in the order you can learn it.

  1. 1ArgumentLevel 1 · Foundation · Logic
  2. 2ValidityLevel 1 · Foundation · Logic

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