[…] a presupposition is an implicit assumption about the world or background belief relating to an utterance whose truth is taken for granted in discourse. Examples of presuppositions include:

  • Jane no longer writes fiction.
    • Presupposition: Jane once wrote fiction.
  • Have you stopped eating meat?
    • Presupposition: you had once eaten meat.
  • Have you talked to Hans?
    • Presupposition: Hans exists.

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