None. They will never find one that burned as brightly as the first one.
or
Do you want to grab a bite?
or
King.
or
Three:
One to write the light bulb removal program,
one to write the light bulb insertion program, and
one to act as a light bulb administrator to make sure nobody else tries to change the light bulb at the same time.
or
6: 2 to screw in the bulb and 4 to testify that it was lit from the moment they began screwing.
or