I agree. I'm deep into specialty coffee and I love making and drinking coffee a lot, but three cups is already higher than what I drink on a normal day. Also, most of the time when I go above this threshold, I drink decaf.
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)?
Thanks. So the author's point in the linked article is wrong, it's the opposite of what they wrote. Contrary to what they say, it's indeed a bus, and it isn't the case that CSMA/CD is useless, it's that isn't enough to deal with the situation, so additions have been made to it.
Thanks for your link that helped clarifying this for me!
When you have switches that link two nodes together, for only the duration of one-way transmission you don't need CSMA/CD. We literally have no use for it. We will never have two computers transmit onto the same Ethernet wire anymore.
WiFi is different of course. However as the author wrote, your WiFi devices always go through the access point where they use 802.11 RTS/CTS messages to request and receive permission to send packets. All nodes can see CTS being broadcasted so they know that somebody is sending something. So even CSMA/CA is getting less useful.
Yes I'm only talking about wifi networks. I get that CSMA/CD itself is getting less useful, but it's because something else is doing its job, not because what it did is useless (that's why I wrote "or something similar" when I asked). Wifi is still, necessarily, a common bus where everyone talks.
CSMA/CD - Collision Detection and CA Collision Avoidance. - FYI the article is from 2017!
for Non-WiFi, we don't use CD because all is bi-dirireactional and all communication have their own lane, no needed because there will never be a collision this is down to the port level on the switches, the algorithm might be still there but not use for it.
For WiFi, CD can never be good or work, because "Detecting" is pointless, it cannot work. we need to "Avoid" so it has functionality because is a shared lane or medium. CA is a necessity, now in 2026, we actually truly don't need it or use it as much since now WiFi and 802.11 functions as a switch with OFDM and with RF signal steering, at the PHY (physical level) the actual RF radio frequency side, it cancels out all other signals say from others devices near you and we "create" similar bi-directional lanes and functions similar as switches.
The article is good and represents how IETF operates a view (opinionated) of what happens inside. We actually need an IETF equivalent for AI. Its actually good and a meritocracy even though of late the Big companies try to corrupted or get their way, but academia is still the driver and steers it, and all votes count for when Working-Groups self organized. (my last IETF was 2018 so not sure how it is now in the 2020s)
How can wifi be a star topology when all clients connect to the base station using the same airwaves? If it really were a star topology, it would also not be possible to use aircrack-ng or other tools to gather data for WPA cracking by passive listening -- that can only happen on a shared medium network.
I think the most accurate classification is that wifi emulates a star topology at OSI layer 2 on top of a layer 1 bus topology.
This is great. The presentation of #1 is a little awkward because it reflects the scope of their project, but gives the impression of geographic concentration.
The TDMRep protocol [1] is supposed to tell scrappers used for text and data mining whether a ressource can be mined or not. Naively, I would say that a website which explicitly express not wanting to be included in training data would also be considered not wanting to be pulled by agents. I know it's not the same thing, but it still itches me a bit.
Using an actual valid domain name for this seems crazy to me. Or, if your database system enforce the use of a valid domain name, why not use a randomly generated subdomain of a domain in your control? Something like login@RANDOMSTRING.deleteduser.yourcompany.tld is also searchable if needed and does the same thing.
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