I have long studied the mechanisms of Dark.  For example, the curious Dark Switches on the wall that when turned in the down position, suck all the light out of the room.  These can be noted to be connected to the active mechanism, the Dark Bulb, for for the newly energy conscious, the Dark Noodle.

There is a massively huge Dark which orbits the Earth and vacuums up light on a 24 hour basis.  It was once believed that all of these minor Dark entities originate from the Dark Side of the Moon.  Now we know that verily, it is the Poles of the Moon which shelter the Craters of Eternal Dark, where for billions of years only the light of far away stars has impacted.

Then there are Books, which cannot even be read in the Dark, which proves their transient nature and even worse, computer screens the abject enemy of Dark, intruding into every corner with luminiscent glowing horrror.