A team of little animals and a team of big animals decided to play football. During the first half of the game, the big animals were winning. But during the second half,a centipede scored so many touchdowns that the little animals won the game. When the game was over, the chipmunk asked the centipede, "Where were you during the first half?" He replied "Putting on my shoes".
Depends. One, if it's an eco-kosher bulb that isn't going to be lit by electricity generated from nuclear power. Two, as long as a man and a woman rabbi have equal turns putting in the bulb. Three, one to change it, one to do a Buddhist mindfulness practice during the change, and one to document the paradigm shift in a best-selling book called The Jew in the Lightbulb. Four, same as above plus an additional rabbi to study the psycho-halachic implications of such a change and then lead a retreat weekend on the experience.