Observation is a more powerful force than you could possibly reckon. The invisible, the overlooked, and the unobserved are those that are most in danger of reaching the end of the spectrum. They lose the last of their light. From there, anything can happen. (…) And for each of these faces Joan, there are twelve more whose lives would have come to an end today - lives altered forever by you. By the simple effect of being present, by entering the light, by joining the dance.