Ugggghhhh, true or not, the Macbeth thing is so stupid. I’ve heard people go on and on after someone said it in the “THEA-TRE!” Just like saying “Break a leg.” It’s fine if you want to say it, but if someone says “good luck (i.e. it’s percieved bad luck),” just go with it. Don’t berate them for not knowing the “right”…