IJMC - Train Tickets
 
I will admit that I should have sent this post last night. I plead the 
fifth and urge you to read on.                                   -dave





     Three PhDs and three MDs are going to a conference and must 
 travel by train to get there.  At the station, the three MDs buy 
 their three tickets and watch as the three PhDs buy only a single 
 ticket. "How are three people going to travel on only one ticket?" 
 says one MD. "Just watch and you'll see," answers a PhD.
 
     They all board the train and the MDs take their seats and watch as
 all three PhDs cram into a restroom and close the door behind them. The
 train departs and shortly afterward, the conductor comes around
 collecting tickets. He knocks on the restroom door and says "Ticket,
 please." The door opens just a crack and a single arm emerges with a
 ticket in hand.  The conductor takes it and moves on. The MDs see all
 this and agreed it is quite a clever idea. So after the conference, the
 MDs decide to copy the PhDs on the return trip and save some money
 (managed care and all that). When they get to the station, they buy a
 single ticket for the return trip.  But to their astonishment, the PhDs
 don't buy a ticket at all. "How are you going to travel without a single
 ticket?" says one MD. "Just watch and you'll see," answers a PhD.
 
     They board the train. The three MDs cram into a restroom compartment
 and the three PhDs cram into an another one nearby. The train departs.
 Shortly afterward, one of the PhDs leaves his restroom, walks over to
 the MDs stall, knocks on the door and says, "Ticket, please".