-- How many
social scientists
-- does it take to screw in a light bulb?
They do not change light bulbs; they search for the root
cause as to why the last one went out.
How many
rec.humor readers
-- does it take to change a light bulb?
100-one to announce that it burned out, 10 to agree, 20
to come running in with new light bulbs and screw them
in, 9 to screw them in and leave the old bulb in, 10 to
ask for a videotape of the screwing, another one to come
in a few minutes later and notice the bulb went out
again and start the whole process all over again....