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• How many editors does it take to screw in a light bulb?
  Two. One to change the bulb and one to issue a rejection slip to the old bulb....
• Q: How many Zen masters does it take to screw in a light bulb?
  A: Two: one to change the bulb and one not to change it....
• How many economists does it take to screw in a light bulb?
  Two. One to assume the ladder, and one to change the light bulb....
• Q: How many Zen masters does it take to screw in a light bulb?
  A: Two. One to change the bulb and one not to change it. A: Four. One to change the bulb....
• Q: How many folk singers does it take to screw in a light bulb?
  A: Two: One to change the bulb, and one to write a song about how good the old light bulb was....
• How many folk singers does it take to screw in a light bulb?
  Two. One to change the bulb, and one to write a song about how good the old light bulb was....