Our uber-BBM scholar Casey Cornelius pointed out the zoetropic effects that occur twice in the film, first when a train goes by, blocking our view, and second, when Ennis is riding through the woods before he meets a bear. A zoetrope predates movies and has a spinning chamber. You look through the holes to see images on the inside that seem to be moving.
=compliment=
An impressive "Z", Lee!
Fran