Three. One to change it while the other two argue about how old the old one is.
Madagascar
because he had a dying light
It doesn't matter, they all turn them the the wrong way.
A: None-there weren't any light bulbs in the 13th century.
Because his career was in ruins
Someone whose career is in ruins.
Old.
One to put in the new one, and two to sing about how good the old one was.
