In the horror film ‘Vanishing On 7th Street’ there is a scene where John Leguizamo’s character Paul is led into a tunnel. As he follows to the end of the tunnel, he finds himself facing a dead-end. He turns around and sees the light furthest to him black out. Then the next furthest light dims, and the next…. What struck me most was not the sensations the producers of the movie must have wanted to evoke in the audience, ie. to feel Paul’s increasing terror as darkness inches closer and closer. Rather, it was how the remaining light becomes increasingly brighter as the light dims one by one.