While we may worry about light pollution in the physical world, the spiritual condition of many people is extremely dark, and they need some light (along with some love).
Have you ever found that something that looked good in the dark didn't hold up in the light? (Maybe your socks not matching?)
Have you ever felt like you were stuck behind layers of curtains, trying to find your way out?
We can pretend to ignore the rules, but - unless we're in charge - we don't actually get to change them.
What good is a sign if the message is painted over?
While the Biblical author John couldn't write everything down, he testified to what he had personally seen and experienced.
Just as we can't see certain details under filtered light, our understanding of the world around us is a function of the light that we use to illuminate it.