Edward Tufte (original creator of sparklines) hosts a long-running discussion of theory and practice: http://www.edwardtufte.com/bboard/q-and-a-fetch-msg?msg_i

Edward Tufte (original creator of sparklines) hosts a long-running discussion of theory and practice: http://www.edwardtufte.com/bboard/q-and-a-fetch-msg?msg_id=0001OR http://www.edwardtufte.com/bboard/q-and-a-fetch-msg?msg_id=0...