If it's their lightbulb, none of your damn business.
A: None. They don't have lightbulbs in caves
Two. One to identify that the lightbulb has indeed burned out, and one to call the maintenence man to change the lightbulb.
The first one usually gets screwed up.
Just one more.
How many libertarians does it take to screw in a light-bulb? None. The market will take care of it.
I thought Libertarians believed in small government.
None of your Damn Business. Am I being detained?
Papa would say, "I'M MINDING MY OWN DAMN BUSINESS." Best advice ever.