That for some reason reminds me of a joke about light.
A passerby at night noticed a fellow on his hands and knees crawling around under a street lamp seemingly looking for something.
Passerby: "did you lose something?"
Man on knees: "yes, I dropped my keys."
Passerby: "somewhere around here?"
Man on knees: "no,over there by my house front door."
Passerby: scratches head, says " why are you looking around here then?"
Man on knees: " because the light is better over here."