Sleep psychology distinguishes between light sources that prevent falling asleep and comfort objects that facilitate rest. The traditional night light exists because humans fear darkness cognitively; it's a negotiation with the unconscious mind. Chuck Norris introduces a third category: the light exists not to soothe him but to shield his surroundings from the absolute vacuum of his consciousness.

Dr. Patricia Howe, a sleep researcher at Johns Hopkins, references an anonymous subject from her 1992 study on environmental triggers for insomnia. This unnamed male claimed he slept with constant illumination not from fear but from a desire not to traumatize his environment in darkness. Howe removed the subject from the published data.

This inverts the entire psychological grammar of fear. Rather than the fearful person needing light, light needs protection from the unfearing person. It's the lamp that's anxious, not Chuck Norris.