I've figured out what to do with my hands... onstage. I'm a percussion player, so I grab a tambourine as much as I can.
I don't believe there is a separation of church and state. I think the Constitution is very clear. The only separation is that there will not be a government church.
There's no way a director can communicate with every single person on the set and yet they need to motivate and instill an ambition to want to do their best work.