[Alsos]

I'm basing that on the stories of how the original cast ad-libbed on occasion, delivered the lines differently from how Lucas intended, etc. (the most famous case being the "I love you" "I know" scene in Ep. V). And "direction" was the wrong word to use there - was thinking about the visual mechanics of filming (staging scenes, etc.) rather than the actor-related part of it. Yeah, if he wouldn't let them act, it doesn't matter the actor.