And there was dark. And nobody liked it. Bye and bye, a large gentleman with a grossly damaged liver happened by and helped the dark-immersed denizens of the planet. He showed humans how to make "dark-suckers." The first dark-suckers were made of wood and simple in design. Unfortunately, these primitive models often got out of control and sucked in too much dark. Another early dark sucker was the candle. The black wicks of these models attest to their dark-sucking capabilities. Modern dark suckers, such as the incandescent bulb, are much more efficient. These bulbs become greyer with age revealing how they function to rid the world of dark.
(Walke, Ken; "Grey Matter," New Scientist, p. 117, February 24, 2001.)
Comment. In his revisionist thinking, Walke exposed our misconceptions about light in reponse to the following question: "The surfaces of the incandescent light bulbs where I work become progressively greyer over time.Why?" Now we know why this is so!
(Left) A candle immersed in dark with unactivated wick.
(Middle) Activated candle wick sucks in the surrounding dark.
(Right) The dark in the vicinity has been fully absorbed on the blackened candle wick.