1_During a life-event every object* the dominant-hand uses is photographed once and while used.
2_If an object of the same type is the next to be used, this object is not photographed unless the life-event changes.
3_A life-event changes as soon as the dominant-hand uses a different object in a different space.
ALBERTO FRIGO, 2003/09.24
*An artifact that is graspable, independent and consistent.