Consensus dynamics, also known as agreement dynamics, is an area of research at the intersection of systems theory and graph theory. It studies how a group of agents—such as robots, sensors, or decision-makers—interacting over a network can reach a common decision or estimate through local rules and information exchange. This is known as the consensus problem in multi-agent systems, where the goal is to ensure that all agents eventually agree on a certain quantity, despite starting with potentially different initial values.