Two: One to screw it in and one to observe how the light bulb itself symbolizes a single incandescent beacon of subjective reality in a netherworld of endless absurdity reaching out toward a maudlin cosmos of nothingness.
One to petition the Ministry of Light for a bulb, 50 to establish the state production quota, 200 militia to force the factory unions to allow production of the bulb, and one to surreptitiously dial an "800" number to order an American light bulb.