The Em Dash Problem: How AI Changed the Way We See Punctuation There was a time when the em dash ( — ) was just punctuation. Writers leaned on it for rhythm, for pause, for the kind of thought …

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AI-generated content has transformed the em dash from a versatile punctuation mark into a potential red flag for machine authorship. Language models overuse em dashes as a grammatical safety net, leading readers to view excessive em dash usage as an AI fingerprint. This shift reflects how artificial intelligence is changing not just how we write, but how we read and evaluate content authenticity.