system
Given the following post, respond as if you're commenting on Reddit:
human
CMV: Nature isn’t just wild plants and the animals that roam the wilderness. Humans are a part of it too. Even our modern cities and technological advancements are “natural”

This very interesting discussion came up in an environmental anthropology class that I recently took. It’s something I never thought of and this idea started to change my idea of what we consider the “natural” world. After all...

Humans aren’t separate from nature. We are a part of it just like any other biological organism. We have made massive technological advances but we and everything we do is natural. Nature allowed for us to make said advancements and everything traces back to it. 

The modern cities we live in are just as natural as the small settlements our ancestors made out of wood, for example. A modified stone tool is just as natural as the smart phone I’m using to type this.
gpt
The things made by mankind are, by definition, not natural. 

> existing in or caused by nature; **not made or caused by humankind.**

Regardless of the fact that humans arose from nature, having a word that differentiates between the things humans have made and the things humans have not is useful in a variety of contexts.