A work is given energy when it retains physical traces of trains of thought, evidence of awkward moments and changes in direction, and a sense that the artist was grappling with something. (royalacademy.org.uk)
The works create physical traces, but the traces point to absence. (creativeboom.com)
There are numerous physical traces on the urban landscape that different cultures and social groups leave in a given area over time. (creativeboom.com)