What’s the point of that fence?

I was thinking about fence (the word fence). That thought process progressed into chain link fence. Then, I imagined that British lady from the TV show “The Weakest Link” saying “You ARE!!! the Weakest Link. Good bye.” Then, I thought “white picket fence”. I imagined a fence just along the front of the yard with the other sides unbound. What would be the point of that, I thought. I could just walk around. It’s not even aesthetically pleasing because I would spend too much time wondering where the rest of the sides are. I thought the only purpose of a...