2 ms·

Then you are unusual among humans.

• squarefoot 3y ago
  No kidding btw. There are ways to recognize an authentic smile from a fake one, usually paying attention to eye movement and if and how muscles around the orbits and cheeks are used. There's plenty of documentation out there, here's an example: https://www.researchgate.net/publication/236579543_Attentional_Mechanisms_in_Judging_Genuine_and_Fake_Smiles_Eye-Movement_Patterns https://www.researchgate.net/publication/236579543_Attention...