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Small-Scale Question Sunday for January 18, 2026

Do you have a dumb question that you're kind of embarrassed to ask in the main thread? Is there something you're just not sure about?

This is your opportunity to ask questions. No question too simple or too silly.

Culture war topics are accepted, and proposals for a better intro post are appreciated.

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I can do TIA 586B in my sleep (orange-white orange, green-white blue, blue-white green, brown-white brown), and only get TIA 586A right without looking it up 50% of the time. That's not a good combination.

Okay, funnily enough, while I do have both schemes straight in my head (we had one building that for whatever reason seemed to have constant network issues that we largely solved by going from 586B to 586A, so I got used to the difference pretty quickly as we reworked the wiring) I swear I had 586B as 586A in my head and vice versa until seeing this post and reminding myself that no, we were using A in that clinic and not B. Doh! facepalm