@thegibson IBM cash registers of old used a version of Token Ring called Store Loop. I was replacing an IBM cash register base on Black Friday and instead of unplugging it from the IBM data connector on the wall (which would self-short to prevent opening the loop) I unplugged it from the back of the register.
Every cash register in the store immediately stopped. Hard.
All the cashiers went "Hey, did your register stop?" I said "Yes, not sure what happened." as I hastily plugged it back in.
On the internet, everyone knows you're a cat — and that's totally okay.