You can’t move on social media for posts speaking about “The 10 Signs of AI-Generated Content,” and invariably, each of them will mention the humble emdash. They all scream and shout from the rooftops that the harmless little line — the staple of grammar for centuries — is a warning sign that this or that piece of content has been written by AI. There’s truth to this, of course. Emdash usage has surged in recent years , conveniently aligning with the rise of large language mo