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
The amount of work not done Simplicity—the art of maximizing the amount of work not done—is essential. Manifesto for Agile Software Development -2000 Lines Of Code simplicity