Urban use, disuse and decay from Detroit.
Buildings have a contextual identity when they are in use, even when they are deteriorating. They take on a measure of human intent.
When buildings are dismantled, they lose their identity, becoming as random as any natural encounter. The juxtaposition of use, disuse and decay creates indelible images. They are easy hits because they are stark and dramatic. They speak to that part of our consciousness that is primally aware of the risk that is always at play around us.
The ruin is not natural, but has become part of nature.