Reciprocity Whenever human activities incorporate machines or rigidly prescribed procedures, the modes of human interaction change. In general, technical arrangements reduce or eliminate reciprocity. Reciprocity is some manner of interactive give and take, a genuine communication among interacting parties. Ursula M. Franklin, The Real World of Technology reciprocity
112. Entrance Transition Problem: Buildings, and especially houses, with a graceful transition between the street and the inside, are more tranquil than those which open directly off the street. Solution: Make a transition space between the street and the front door. Bring the path which connects street and entrance through this transition space, and mark it with a change of light, a change of sound, a change of direction, a change of surface, a change of level, perhaps by gateways which make a change of enclosure, and above all with a change of view. Christopher Alexander, Murray Silverstein & Sara Ishikawa, A Pattern Language Walking through doorways causes forgetting53. Main GatewaysAt the Green MosqueThe wind's pulling us inOne who has trodden this garden pathA more spiritual place transitionsdoors