Don't Call Them "Light Bulbs"...

..because they aren't. They are Dark Suckers. Turn on a Dark Sucker and look at the area around it. Go ahead, this will be here when you get back...see how the area closest to the Dark Sucker is brighter than an area farther away? That's because the Dark Sucker is only effective for a certain distance from it. The bigger and more powerful the Dark Sucker is, the more dark it can suck up. And, they don't "burn out", they're just full of dark and need to be replaced.

Get it?