Three Apple engineers and three Microsoft employees are traveling
by train to a conference. At the station, the three Microsoft employees
each
buy tickets and watch as the three Apple engineers buy only a single
ticket.

"How are three people going to travel on only one ticket?" asks a
Microsoft employee. "Watch and you'll see," answers the Apple engineer.
They all board the train. The Microsoft employees take their
respectiveseats but all three Apple engineers cram into a restroom and
close
the door behind them.

Shortly after the train has departed, 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 Microsoft employees saw this and agreed it was quite a clever
idea. So after the conference, the Microsoft employees decide to copy
the
Apple engineers (as they always do) on the return trip and save some
money
(being clever with money, and all that). When they get to the station,
they
buy a single ticket for the return trip. To their astonishment, the
Apple
engineers don't buy a ticket at all.

"How are you going to travel without a ticket?" asks one perplexed
Microsoft employee. "Watch and you'll see," answers an Apple engineer.
When they board the train the three Microsoft employees cram into a
restroom and the three Apple engineers cram into another one nearby.
The train departs. Shortly afterward, one of the Apple engineers
leaves his restroom and walks over to the restroom where the Microsoft
employees are hiding. He knocks on the door and says, "Ticket,
please..."