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If "Master/Slave" terminology in computing sounds bad now, why not change it to "Dom/Sub"?
(lemmy.dbzer0.com)
A "Showerthought" is a simple term used to describe the thoughts that pop into your head while you're doing everyday things like taking a shower, driving, or just daydreaming. A showerthought should offer a unique perspective on an ordinary part of life.
I've seen 'Active / Passive' used, that seems alright. There's plenty of alternative terms to use without borrowing terminology from sexual roleplay.
Anyway, the Sub is supposed to be the one that's actually in control for this kind of thing (otherwise you'd just be in an abusive relationship), so that confuses things when you start trying to applying it elsewhere.
The issue is acronyms; there's millions of products, schematics, datasheets, and manuals that refer to them as MISO and MOSI with no further explanation. Any new standard that doesn't fit runs into the 15-competing-standards problem, and ought to be followed by an "AKA MISO" every time it's used.
I've seen "Main" and "Secondary" be used exactly for this reason, as they keep the same first letter so don't require acronyms to be changed.
I've seen "Main" and "Support" be used likely for the same reason