We are looking for the traces on the walls left by a demolition. i.e.: the paint, wallpapers, contours of previous rooms or buildings...
"Every once in a while, he would suddenly feel what it had been like to hold the three-year-old boy in his arms - but that was not exactly thinking, nor was it even remembering. It was a physical sensation, an imprint of the past that had been left in his body, and he had no control over it."
