Why does the majority of your post read like you don’t know these exist? https://en.wikipedia.org/wiki/Coaxial_power_connector

They’re fine, but as you mentioned in the first paragraph, lack of a standard is their main drawback. You could find two power supplies with the exact same connector but different voltage and polarity.

you kid, but there’s no shortage of steam games where steam (a launcher) updates the game’s launcher

Of course it still matters, you just take the best case for n as n→∞, instead of the worst or average case.

Really annoys me that this is actually O(n log n) because for large enough n the merge sort will take longer than n*1e6 second. Randall should know better!

Yes, but the language/compiler defines which characters are allowed in variable names.

Ooh, I did guess wrong! That is an interesting specimen.

My suspicion is that they are experts in ergonomics, not in electrical engineering, so they probably aren’t aware of how silly and possibly dangerous what they did is. Or perhaps they simply don’t care because “it gets the job done”, standards and specifications be damned.

Anyway, in this case I’m happy to be proven wrong. Thanks.

It makes sense, if I remember correctly the older USB cable (i.e. everything before Type-C) are passive, so as long as the pins are wired symmetrically it wouldn’t matter which side is which. But whoever made your keyboard really blundered, there is no reason in the world why anyone would do this. There’s so many options: the B connector, mini USB, micro USB. All would make sense to put in the keyboard. A just doesn’t.

Let me guess: you got it from an ultra cheap online store? AliExpress/Wish/Temu?

I think the biggest problem I see with A to A is: who’s delivering power, and who’s receiving it? Maybe if you use it only with the device it came with then it’ll be fine, but if anyone tries to just hook up that cable to two random computers, it might actually cause a short circuit and fry something.

Whereas Type-C was explicitly made to handle such situations.

Or a shorter reason: Type-C cable is allowed by the spec while Type-A is not.