Why it’s (not) okay to fake it As you go through your day, you might offer some fake smiles for a variety of reasons, such as to seem polite to come across as confident. But faking it can backfire.

Fake or polite smiles, on the other hand, usually involve only the mouth muscles. The eyes remain wide or indifferent, and the smile appears more mechanical than meaningful—a kind of emotional ...

However, when trying to interpret the images of the real responses, people performed no better than chance, getting it right just 50 percent of the time.The algorithm was able to identify the fake ...