In 1973, Bark began using his personal photo booth to
actively explore the limits of experimentation within the confinements of the booth's cramped space and the inability to alter the lens, shutter speed or format.
According to Magda Gerber and Allison Johnson (1998), infants establish trust with a parent or caregiver when the parent and caregiver gives them the freedom to
actively explore their environment with
limited restrictions and boundaries.