I built a huge wall. It was built out of brick. It was menacing, looming. I built it to prevent bad people form coming over. When ever they were near me, close to me, they would hurt me. So I kicked them out and built a wall.
Unfortunately, it kept out everyone. It was a really good wall. “Good,” as in it was serving its purpose perfectly. Eventually, I was left with very few people on my side of the wall. It got lonely. So I considered what would happen if I tore the wall down.