One. But he doesn't screw it in, he just holds it and the world revolves around him.
NEIN, NEIN NEIN NEIN NEIN
Two, one to hold the bulb and one to rotate the universe.
2. 1 to change the light bulb, the other to take pictures.
Two, one to change the light-bulb, and one to observe how it symbolizes an incandescent beacon of subjectivity in a netherworld of cosmic nothingness. This is courtesy of Spencer Reid.(CM)
Just one to hold the bulb while the world revolves around them.
None. They just grab it and the world to revolve around them.
One narcissist. The narcissist holds the lightbulb in the socket and waits for the world to revolve around him.
One. He stands in place while the whole world revolves around him.