In particular, they are watching the infamous trolley scene, in which three taciturn men ride a clanking railroad into a land of desolation known as "the Zone".
Kiehl said he had avoided complicated moral problems, such as the classic trolley dilemma, in which the subject is asked to choose whether to cause one person's death in order to save the lives of others in the path of a runaway trolley, because psychopaths might not understand the problem or wouldn't answer seriously.
But even that sequence was beaten by the celebrated trolley scene, in which the couple (the wife now trying to escape from her apologetic husband, who came close to murdering her) take a trolley ride (with Murnau's camera) that passes from the wooded countryside to the city's bustling edge.
On Thursday, Farmers for Action, the group which Handley leads, is planning to protest outside Morrisons' distribution centres and carry out a number of "trolley dash" protests, in which farmers clear supermarkets' shelves of milk and give it to charities.
Even smokers, who are normally cast into the back alleys in cigarette-averse Los Angeles, have a comfortable trolley on an outdoor patio in which to enjoy their Gitanes cigarettes.
For instance, our intuitions seem to be affected by whether we word our scenario in terms of killing or saving, and by the order in which the trolley examples are considered.
Broadway had open trolleys with no side walls, in which you at least caught the breeze, hot though it was, so that desperate people, unable to endure their apartments, would simply pay a nickel and ride around aimlessly for a couple of hours to cool off.
A trolley car collided with a bus in which she was travelling and a metal handrail punctured her abdomen, splintering her pelvis, shattering her spinal column and collarbone, and leaving her already damaged leg broken in 22 places.
