The problem of duration: Archeology of everything

We could make a conceptual remark, arguing that all is built on top of a previous state of space- whether it be the cityscape or a landscape. If we adopt this notion of relative newness, where context is always a given, obligatory attribute, all frustration of duration, structure and solidity of an object of architecture disappears. While remembering the book by Marshall Berman All That Is Solid Melts into Air, we become aware that sooner or later what is considered new is soon to become the former, the context itself.  Now it seems that, voluntary or not, all (built) architecture always reflects the context. Because the act of building imprints the context from which this architecture originates. Therefore, in the scale of the city, the context is a given attribute, and the notion of before/after becomes irrelevant. The only true duration that remains important is the half-life of nuclear waste that measures in different scale of time altogether.