Our feeling is that the most important thing on a set is that actors have enough confidence to try different things. If there's stress or tension, they won't go out on a limb because they won't want to embarrass themselves if they don't feel completely comfortable.
From what I've been able to determine, many of our big stars are addicted to tobacco. They want to smoke in movies for the same reason I smoked as I wrote, which is that they think their performance is going to be better.
A genuine leader is not a searcher for consensus but a molder of consensus.