RST says agents can agree on a decision by each broadcasting a "frequency" and letting the swarm fall into step, the way fireflies or pendulum clocks synchronize, instead of asking a central coordinator.
There is no RST code or paper to run. This page is a toy built on the Kuramoto model, the standard math for coupled oscillators that the idea borrows from. Each agent is a dot on the ring. Its angle is its current leaning among three options. Agents nudge toward the swarm's average angle; once they lock together, the option they point at is the "consensus".
Line: sync level r (0 = scattered, 1 = fully locked). Dashed line: 0.9, where this toy calls consensus reached.
Message counts: if every agent must hear every other agent's frequency, that is N×(N−1) messages a tick. A coordinator that collects one vote from each agent and sends one answer back needs 2N. Broadcasting a frequency is still communication.
A concrete mapping from an agent's reasoning to a phase, a defined decision rule, a transport for the broadcasts, and a test that compares it with plain majority voting on real fleet decisions. For a fleet of five agents, a simple vote collected by one agent is cheaper and easier to audit.