From a Jungian perspective, shadows are the unconscious layers of the personality that are integrated into the structure of the "experienced world" only through the process of individuation.

The shadow becomes a dark entity with a nature all of its own and could be one of the few concepts relating to memory from a digital/ virtual standpoint.

"Collective Memories" - is a representation and, at the same time, an investigation of how the chosen site (Harvard Square/ Holyoke Center) can be coded as an archetypal image at the brain level. This specific psychological image will afterwords be used in the short or long term memory and will reappear after time in the act of remembering.