It shows how there will always be a part of Boston missing, a wound which can only be melded, not replaced or healed. Furthermore, the concept of the heart being formed of strictly negative space is a much stronger point than a positive concept.
However beyond this at the middle of the heart small text appears saying “We will finish the race”. This brings to focus how the people of Boston, ought not to look back for too long, but rather fix their eyes on hope for a better future and living their lives, as well as running in dedication to all that was lost. It’s a positive, more upbeat statement expressing how one day it will get better. One may never cope, but he or she can move on without forgetting such a