Again we sense this instinctively--the pleasure we feel when a tooth stops hurting reminds us that we live our life in contexts and contrasts, and so perhaps you can argue that only by witnessing, and confronting, great evil were the forces of light able to burn most bright.

CNN: The necessary evil?

Known as the 'Festival of Light', it celebrates good over evil and ushers in the Indian New Year.

CNN: Quest for the festive spirit

Tell them that it was a mistake for Google not to put a red light indicating that a photo or video is being taken, and that you hope there will be one in future iterations (even though evil folk may find a way to somehow disable the light).

WSJ: Google Glass: An Etiquette Guide

Ms Gillard said the allegations that had come to light were "heartbreaking", concerning "insidious, evil acts to which no child should be subject".

BBC: Australia PM Julia Gillard announces child abuse probe

To this day, Jews around the world honor the Maccabees' everlasting hope that light will overcome the darkness, that goodness will overcome evil, and that faith can accomplish miracles.

WHITEHOUSE: Hanukkah at the White House: A Menorah that Survived Sandy

Unfortunately, they seem to be a necessary evil in this crazy supply-versus-demand world of capitalism we all call home, particularly in light of the spectrum crunch the FCC keeps warning us about.

ENGADGET: Cricket's new tiered data plans seem like a model for the industry to us