[quote=@TheUnknowable] true. I was just trying to figure out some sort of psuedo-science to make "dark" sound plausible. [/quote] My advice would be to play off of the weirdness and subjectivity about the nature of darkness. e.g. Darkness can travel at the speed of light*, but at the same time doesn't because it doesn't exist. *If you have a light source in front of an object, which is in front of another object, the shadow from object 1 will be cast onto object 2. If you move object 1, the shadow will move on object 2. However, because of how cones work, the shadow will be slightly bigger than object 1, so it will have to move faster to achieve the same effect. If the light is intense enough, and objects 1 and 2 are far enough apart, the shadow will "move" faster than the speed of light. Darkness, while it affects temperature and stuff, is most notable because of psychology. You could do something with that, perhaps allowing it to associate with fear and whatnot.