On a train to a large computer convention there were a bunch of
computer programmers and a bunch of computer engineers. Each of
the programmers had a train ticket. The group of engineers had
only ONE ticket for all of them. The programmers started
laughing, figuring the engineers were going to get caught and
thrown off the train.
When one of the engineers, the lookout, said "here comes the
conductor", all of the engineers went into the bathroom. The
programmers were puzzled.
The conductor came aboard, said "tickets please" and got tickets
from all the computer programmers. He then went to the bathroom
and knocked on the door and said "ticket please". The engineers
stuck the ticket under the door. The conductor took it and moved
on. A few minutes later the engineers came out of the bathroom.
The computer programmers felt really stupid.
On the way back from the convention, the group of programmers
decided that they would try that method, too. They bought one
ticket for the whole group. They met up with the engineers in the
Again, the programmers started snickering at the engineers. This
time NONE of the engineers had tickets. When the lookout said
"Conductor coming!", all the engineers went to one bathroom and
all the computer programmers went to the other bathroom.
Before the conductor came on board, one of the engineers left
their bathroom, knocked on the programmers bathroom, and said