- demand your salary be paid in salt
- have all arenas be covered in sand
- calculate only with pebbles
- only allow xylophones made of wood
And so on. It's a tiring journey to embark on -- oops, one can only embark on ships...
Meanings change over time, and whenever this comes up it always just feels like some folks are adamant about the archaic usage just to (try to) show how smart they are.
https://www.savagechickens.com/2007/08/public-service-announ...
OED dates the first known use of "to reduce drastically or severely; to destroy, ruin, devastate" to 1660.
But "decimate"? How often do you feel the need to refer to reducing the size of something by one tenth? This is bizarrely specific and I highly doubt it ever has any real applications unless you invent one.
I instantly howled with anguish. Surely decimating them should mean removing NINE tenths. The Master was a small-minded coward.
Seriously though, languages change.