Okay, I have this incredible 1970s tile throughout most of my house. It looks likes this:
Now, with that tile and tile pattern spread out throughout an entire house, you would think that you wouldn't be able to tell if, say, there were a cockroach ANYWHERE on that title. There are varyingly sized splotches of brown here and there and in that other place, too. There are splotches of brown in the hallway and the dining area, in the bathroom and the kitchen, at the front door and the back door and the OTHER door. This tile is everywhere in this house and so are all those irregular brown splotches.
So, imagine my surprise at the discovery that I have EVERY BROWN SPLOTCH IN THIS HOUSE MEMORIZED.
Yes, every one.