Meaning

There’s a phrase that’s now become ubiquitous on various parts of the internet, and it goes like this:

The purpose of a system is what it does.

At first glance it’s a meaningless non sequitur, a sort of self-referencing zen koan seeking to make something simple seem profound. Obviously systems work as they’re designed, right? It’s tempting to discount it out of hand and move on. And yet, there’s a lot of linguistic trickery going on here that I want to unpack, and it carries far deeper implications than mere language.