void ManageOutbox()
    {
        if (!mouth.IsOccupied() && uiController.HasSendingDemand())
        {
            string toSendMessage = uiController.GetSendingDemand();

            if (debug)
            {
                Debug.Log("GameController: I will send: '" + toSendMessage + "'.");
            }

            StartCoroutine(mouth.AskServer(toSendMessage, "client_speaks"));
        }
    }