That once upon a time there lived a young man. An angry young man. A man whose beard grew dark and thick (though, it should be noted that not all angry men have dark, thick beards. some have light, thick beards and some have no beards at all).
And, one day, whilst a-traipsing about, this man stumbled onto a genie's lamp. And, as so many have done, he looked confusedly at the find. There seems often to be this glance in stories of genie's lamps, as if any other lamps besides genie's lamps can be stumbled upon whilst a-traipsing.
And once this angry young man had paid the genie's lamp his confused look, once he had stroked his dark beard, he finally rubbed the lamp. Smoke leaked out and, soon enough, the genie followed. With arms crossed over each other, the genie bellowed forth his memorized script. "What do you wish of me?"
The angry young man took no thought and said simply, "I wish for darkness." The genie snapped his fingers and the angry young man found himself (or lost himself) in complete darkness. With a yelp of fear, the angry young man instantly understood how vast complete darkness is. It engulfed everything and left nothing. The young man yelled to the genie, whom he could only assume was still near, "I wish for light." The angry young man heard the genie's fingers snap and, then, when light returned, he saw the genie again, and breathed a sigh.
The young man took a moment to catch his breath. He looked at the genie and smiled the smile that only old friends share and said with relief, "I wish I never wished for darkness."
And the genie snapped his fingers.