I've been taking daily walks for a few months now. I walk around the park, and through the parking lot of the defunct restaurant next door. Each time, when walking from one lot to the other, I passed a large propane gas tank. Other than knowing it was there, I paid little attention to it.
Recently, I changed my route, in order to walk more miles each day. Now, instead of walking past the tank, I'm walking toward it. Now I see what was written on it, which I ignored before.