The main melody in this track is used four times and in three (or even four) different ways. For the first time we hear the regular version played on the piano; then comes the main melody, but it sounds like time is rewinding back; at the end we again hear the main melody, but performed by other instruments; the outro uses a reversed version of the main melody with a slightly modified arrangement. All this refers to the fact that according to Hawking, black holes are symmetrical in time, since fundamentally practically do not differ from white ones, since both of them radiate and absorb.