We’ve all done it. Whether it’s a “white lie” about liking a friend’s cooking or a strategic omission in a high-stakes negotiation, deceit is woven into the fabric of human interaction. While often viewed negatively, deception is a complex psychological and evolutionary tool that serves a variety of surprising purposes. The Evolutionary Roots of "The Lie"

The deep-seated need to belong often leads people to mirror others’ interests or inflate their own successes.

Pop culture often suggests we can identify liars through simple "tells" like looking away or touching one's nose, but experts warn these are far from foolproof. Instead of a single "Pinocchio's nose," look for and deviations from a person's baseline . Paul Ekman, PhD's post - Facebook

How to Tell If Someone Is Lying to You, According to Experts

1. Everyone Lies—Even You Erikson emphasizes that lying is a universal human behavior. While we often focus on others' dishonesty, Facebook·Paul Ekman, PhD

To avoid punishment, criticism, or embarrassment.