Maybe its just me but I don't see the case you think you are making. Expressing an opinion yes. As for 5, 10, 15, 30, 60, 240 (minute), Daily being arbitrary. No, exactly the opposite. Plotting a 100 tick chart or plotting a 100 length MA is arbitrary. W.D. Gann was such a great trader because he understood, among many things, the value of both price and time.