No, it was not an elbow in the ribs.
I was "trying to do some research on" (ie, Googling) Refresh Rates for TVs.
Specifically, I was trying to find out if on the whiz-bang 4K models, a 60Hz
refresh rate was particularly bad for viewing.
Well, I found this interesting and well-written article, which I thought was worth
posting about here.
It's by CNET, and it cites the USA refresh rates, but read 50Hz and 100Hz for here.