The document discusses lying and reasons why people lie. It notes that research shows people lie constantly for various reasons, such as small embellishments providing psychological benefits. Children as young as age 3 begin to lie, often learning from parents. While experts may not see a large difference between small and large lies, people's behavior differs depending on whether they are embellishing a story or telling a major falsehood. The document provides three ways to tell if someone is lying and includes curiosities about lie detectors and new words related to untruths. It concludes by asking how often the reader lies.