Can't have people play outside own imaging. Can't play effect the scene has to have on audience. Can't think the story , can't think dialogue. Character can be out of control, actor has to be in control. Choice best emotion of scene.
Clarity is most important, less acting.
Make the character understood and attractive. Coiled snake is more frightening than one sprung. Conversation is not a scene. Do it for the one man who knows. Don't act dangerous .