The Origin of the Smile explores the surprising, and slightly unsettling, history behind one of humanity’s most familiar expressions. From its possible beginnings as a fear signal and gesture of submission to its role as social glue, cultural code, and digital shorthand, this episode traces how a baring of teeth meant to avoid violence became a symbol of joy, trust, and connection. Blending anthropology, biology, and cultural history, it reveals why smiles don’t always mean happiness—and why, despite everything, they still shape how we relate to one another every single day.

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