Well many how???
They don't change it. They just watch it burn out, then follow it around for another 15 years.
One to hold the lightbulb, and the rest of the world to revolve around them
Because he had a dying light
Just one but he has to coordinate ten other professionals who are doing this quiet complicated task.
Some guy sitting up all night wondering if there really is a dog
Someone who stays up all night wondering if there is a dog.
