This woman decides to buy a new cupboard that you have to assemble
yourself.
Back home she reads the instructions carefully and assembles the
cupboard in the bedroom. It looks really neat. Then, a train passes
and the whole cupboard collapses.
Not daunted by this she re-reads the instructions and reassembles
the cupboard. Then, a train passes and the whole cupboard collapses.
Thinking that she must have done *something* wrong she re-re-reads the
instructions and re-re-assembles the cupboard. Then, a train passes
and the whole cupboard collapses.
Now, she's finally fed up with this and calls the client service. She is told
that this is quite impossible and that they'll send along a technician to have
a look. The technician arrives and assembles the cupboard.
Then, a train passes and the cupboard collapses.
Completely baffled by this unexpected event, the technician decides to
reassemble the cupboard and sit inside it to see whether he can find
out what causes the cupboard to collapse.
At this point, the womans husband comes home, sees the cupboard and
says: "That's a nice looking cupboard", and opens it.
Says the technician: "You won't believe me, but I'm standing here
waiting for the train".