Beyond a repetitive action of the swing door, the whole dynamicity exists. 

Beyond a neutral border of a bare wall, two distinct zones exist.

Beyond an  invisible threshold, a new space exists.

A path is to be most efficient when it leads people from one point to another in straight. Nevertheless if where people stare at is same as where they walk on, it is not to be the most impressive experience. The passage therefore ought to orient people’s view somewhere else other than their path. As a door opens and people pass through each threshold, the conflict between path and view begins and varies.