Thanks for sharing this very interesting read.

There's one point I don't really get and I would be glad if someone could clarify it for me. When the author says that even over wifi, the CSMDA/CD protocol is not used anymore. Then how does it actually work?

Discussing this, the author explains:

> If you have two wifi stations connected to the same access point, they don't talk to each other directly, even when they can hear each other just fine.

So, each station still has to decide at some point if what its hearing is for them or not, as it could be another station talking to the AP, or the AP talking to another station. How is that done if not using CSMA/CD (or something very similar at least)?