NJ...why is it ridiculous ?
Confusing I grant you but this all the result of new types of fitting, new bulbs and new inventions.
Year ago, when we were lads, we only had two types of light fittings...one that hung from the centre rose of the ceiling, usually on a bit of hairy flex. The other were either table lamps or standard lamps, but they both used the same incandescent and highly inefficient bulbs, as the ceiling ones, and gave off as much heat as they did light.
The changes started with florescent strip lights, first in kitchens and then in a circular form, in our living rooms, again fixed to our ceilings. I remember Dad changing the incandescent fitting, with the hairy flex, for one of those round florescent ones. We all marvelled at what a lovely bright light it gave out, without realising that it made everybody look sightly ill and really wasn't such a good light after all.
Along came Halogen spotlights !
Now we have LEDS that are not only miles cheaper to run but last almost forever.
We are all on a learning curve here !