Gordon Joly wrote:
Why do Undergoundroids incessantly encourage us to "use all available
doors when boarding the train" and then "use all available space"
inside the carraiges?

I exhibit the properties of a particle, never a wave!!

Of course, but, as you say yourself, they are encouraging *us*. Don't a
large number of particles behave like a wave?
--
Richard J.
(to e-mail me, swap uk and yon in address)