Mathematicians
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A Mathematician, a Biologist and a Physicist are sitting in a
street cafe watching people going in and coming out of the house on the
other side of the street.  First they see two people going into the
house.  Time passes.  After a  while they notice three persons coming out 
of the house !

The Physicist     :   "The measurement wasn't accurate".

The Biologist's   :   "They have reproduced".

The Mathematician :   "If now exactly 1 person enters the house then
                       it will be empty again."


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An engineer, a physicist, and a mathematician are shown a pasture
with a herd of  sheep, and told to put them inside the smallest
possible amount of fence.

The ENGINEER is first.  He herds the sheep into a circle and then
puts the fence  around them, declaring, "A circle will use the least
fence for a given area, so this is the best solution."

The PHYSICIST is next.  She creates a circular fence of infinite
radius around the sheep, and then draws the fence tight around the herd,
declaring, "This will give the smallest circular fence around the herd."

The MATHEMATICIAN is last.  After giving the problem a little thought,
he puts a small fence around himself and then declares, 
"I define myself to be on the outside!"



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