 Here is how this mechanism works in a game setting. Start with all end nodes equiplausible for all players. Since upgrades proceed by public announcement, all players will share the same beliefs throughout. In the procedure to follow, a move x is dominated in belief by a move y of the same choice node if, in the acting agent’s plausibility ordering, the most plausible end nodes reachable after y are all better for her than each most plausible end node compatible with move x. Now perform radical upgrades of type