Related:

• How many libertarians -- does it take to screw in a light bulb?
  None, if he wants to sit in the dark, it's his business....
• How many University of Chicago Economics professors -- does it take to change a light bulb?
  None. If the bulb needed fixing the market would have done it....
• How many libertarians -- does it take to screw in a light bulb?
  None, because somebody might come into the room who likes to sit in the dark....
• How many Marxists -- does it take to change a light bulb?
  None, the seeds of revolution and change are within the light bulb itself....
• How many supply-siders -- does it take to change a light bulb?
  None. The darkness will cause the light bulb to change by itself....
• How many gnomes -- does it take to change a light light bulb?
  None. The light bulb keeps blowing up....
• How many psychologists -- does it take to change a light bulb?
  None. The bulb will change itself when it is ready....
• How many aerospace engineers -- does it take to change a light bulb?
  None. It doesn't take a rocket scientist, you know....
• How many Mensans -- does it take to change a light bulb?
  None. The bulb isn't bright enough....