A major one which no one can overlook is technological and based on inventions and discoveries which have altered the whole basis of production and deeply affected social relations.
Cutting up fowl to predict the future is, if done honestly and with as little interpretation as possible, a kind of randomization. But chicken guts are hard to read and invite flights of fancy or corruption.
I'm definitely one of those actresses who comes to a set knowing how I want to do a scene, and I definitely love input from my directors and my writers. I know that there's some actors who like to be left alone, they like to be very independent, but I actually really enjoy the teamwork.