In message , at 13:53:30 on
Thu, 5 Aug 2010, Peter Masson remarked:

You do need to carry a dog to be able to use an escalator, and you do
need to have all your personal possessions with you to be able to leve
a train. ;-)

I often leave some of my personal possessions at home, as well as most
of my impersonal possessions. Therefore I can only take off the train
that subset which I brought on board.
--
Roland Perry