The coexistence of radical change and radical stasis, is a very important factor that had changed the face of historic cities in many different ways. Our decisions about what to preserve and what to demolish is probably the most effective cause of this coexistence. But if we look forward and think about the future, the scenario can change in another way. In perspective rules, when a series of lines get further from us they seems more closer to each other until they look like one unit. The past and future, I believe are just the same, far enough to be seen as a united sector. Thus, may be it is the time of thinking how to preserve future, and based on this, my question is, especially in a historic context that involve many layers of time and human activity, what should be added and what should not?