If you know the number, you don't know where the socket is.
You can sense his presents.
ME: Huge mess to clean. F: It's spotless! M: *sprays luminol* You'd never know they were even here.
None. It's too dark.
Only one, but he'll just hire a ghostwriter to do it for him.
You can take as many as you want but they will only give you the screwing direction.
30 - One to hold the light bulb and 29 to drink until the room spins.
GO CEILING!!! WHOOOHOOO!!!! YOUR NUMBER ONE!! YAY, CEILING RULES!!!
The odds are against them.
One to generate a "ChangeLightBulb" event to the socket.
One. They stick the bulb in the socket and wait for the world to revolve around them!