 Since the publication of Convention, it is more common to refer to the communicator as the sender and the members of the audience as receivers. The basic idea behind sender-receiver games is the following: Nature selects which state of the world obtains. The person in the role of Sender observes this state of the world (correctly identifying it), and sends a signal to the person in the role of Receiver. The Receiver, upon receipt of this signal, performs a response. If what the Receiver does is the correct response, given the state of the world, then both players receive a payoff of 1; if the Receiver performed an incorrect response, then both players receive a payoff of 0. Notice that, in this simplified model, no chance of error exists at any stage. The Sender always observes the true state of the world and always sends the signal he intended to send. Likewise, the Receiver always receives the signal sent by the Sender (i.e., the channel is not noisy), and the Receiver always performs the response he intended to.