The handshake is a widely used human gesture whose exact origins are difficult to pin down, though several outlets note that it appears in ancient societies. A common explanation is that it developed as a sign of good faith: by extending a hand, people could show that they were unarmed, helping to reduce perceived threat. Rather than serving only one purpose, the gesture has taken on many meanings across time and cultures. The Conversation describes the handshake as both familiar and ancient, used to signal trust, alliance, and cooperation, but also associated with other contexts such as deception and grief. While modern usage often focuses on politeness, introductions, or agreement, the sources collectively emphasize that the handshake’s significance has shifted depending on setting and relationship. Overall, the available accounts suggest that the handshake’s development is not definitively documented, but that its persistence reflects its versatility as a social signal, ranging from attempts to build confidence to expressions connected to more complex human situations.