Merely illustrates that bureaucracy is designed to render anonymous, and forgive, the complete pillocks who write such drivel. "Use all the doors" presumably produces an interference pattern on the far side of the carriage, due to quantum effects. I assume they mean "Try to use a different door to most of the other people, and try not to stand or sit on them if there is floor or seats unoccupied".
I have to admit, there is a roundabout near me with a road sign clearly saying "Use Both Lanes". As I drive a muckle great Volvo 760 Turbo, I invariably DO use both lanes, which seems to annoy a lot of people.
Nice find for a dicument, though, although I think you should get out more, maybe.
(Oh dear, Freud doing my spelling for me again. I assume a dicument is a document written by a dick.)
Reputedly, Allen Funt (who I think invented the Candid Camera format), once noticed some out-of-town London Underground station that had a platform level with the street. One early morning, he and a small group of friends managed to smuggle a Grand Piano onto a tube train, and unloaded it at Angel, which has the deepest escalator-only access to the platform. Then he asked the staff for a hand getting it up to the street.
I can only assume that member of staff, mentally damaged for life by the incident, now writes guides for ticket inspectors.