Depending on the level of experience and coping skills, one can be completely comfortable in environments even if according to studies and what is acceptable societal behavior, would be completely abnormal. Chaos is found everywhere. At work, sports, music, the ocean and every imaginable environment.
The images of these New York subway conductors reveal a sense of ease. Whether it's subconsciously or just plain boredom is left to the viewer to ponder. I tend to believe in the dramatic thought that each conductor is experiencing a self reflective or enlightenment moment. None the less, take it as a lesson, chaos can be calming and our ability as humans allows for us to develop coping skills to manage our response.
See New York's Subway Conductors Here