This is really interesting.

This is really interesting. It questions the generally held wisdom that correlation does not apply causation, at least in simple situations. In a simple two variable relationship the noise of the causing variable will have an effect on the other variable but the reverse would not be true.
https://medium.com/the-physics-arxiv-blog/cause-and-effect-the-revolutionary-new-statistical-test-that-can-tease-them-apart-ed84a988e