Why do people say untrue things?

People may say untrue things for various reasons, including the desire to avoid conflict, protect themselves or others, or manipulate a situation to their advantage. Sometimes, individuals may genuinely believe in the falsehoods they express due to misinformation or misunderstanding. Additionally, social pressures and the need for acceptance can lead people to distort the truth to fit in or please others. Overall, the motivations behind untruths can be complex and context-dependent.