I once applied for a “database admin” job at one of the big credit card companies. The job description was basically “run all our Oracle databases” and the salary was in the mid 2 millions USD, but I assumed that figure was typo’ed or something ( an extra 0 maybe?)

In the interview I learned that there was no typo and it was to be one of the seven people on the planet that run the databases for this credit card processor. They said “if the database goes down then we are losing billions of dollars a minute”.

Anyways I didn’t get the job, but they’re not all underpaid.

Makes me think of this: https://en.wikipedia.org/wiki/Dentition#Dental_formula

Teeth can tell you a lot about an animal. Their size, shape, number etc can tell you what it eats or how it eats or how much it eats. Dental formula can give you clues for how animals are related to each other. If two different animals have the same dental formula then maybe they share a common ancestor or have a similar diet. If two animals are already very similar but have different dental formula then maybe they’re only very distantly related or there’s been some convergent evolution elsewhere.

Corporations are not people, therefore do not have a right to free speech.

Zigbee mostly uses 2.4Ghz, so it’s not helping remove congestion from that band anyways but I guess the other protocols do. Can’t the devices phone home as soon as they’re connected to a hub that’s internet connected? Even if the hub has to cooperate with the device, they’re made by the same manufacturers so I wouldn’t trust tleither of them.

With wifi I can spin up a separate iot vlan that cannot access the internet. That vlan doesn’t require my ISP, it’s entirely local. I get to control exactly who connects and even who they connect with. I don’t see that same control with the alternatives.

I guess I do see an argument for very low power devices using a lower power protocol, but I guess I just don’t have any of those devices so it hasn’t been an issue for me. And like you said traffic congestion is a valid problem, I’ve just never experienced it.

I don’t understand why smart devices don’t all just use wifi. What problems are these competing standards solving?