Here is a short youtube video in which Professor Steve Mann describes his own ladder theory. Pertinent to this discussion is sousveillance. Sousveillance, in Mann's own words, "is the recording of an activity by a participant in the activity". See also,

As a term, sousveillance encompasses all points-of-view, whether point-of-eye or point-of-body or other.

AuthorKatina Michael