You'll see that this is exactly the same condition, only in the no-director condition they just have to remember to apply this somewhat arbitrary rule, whereas in the director condition, they have to remember to take into account the director's perspective in order to guide their ongoing behavior.
Fíxense que é exactamente o mesmo, só que agora teñen que acordarse de aplicar esta regra un tanto arbitraria, mentres que antes tiñan que recordar ter en conta a perspectiva do director para guiar a súa resposta.