hugshelp
Why are so many people being rude to the OP? If it's so bleeding obvious how come the conductor didn't know? Knowing everything is not a prerequisite for being an adult. I think there's another term for that.
I would have thought accepting information freely given with gratitude where relevant, and moving on with grace where it isn't relevant to you or is something you already know would be far more adult behaviour.
I think that teaching Granny to suck eggs comes to mind.
Perhaps it would be better, as someone suggested, posted on MN so that a reminder could be given to children of Mumsnetters.
That being said, I did see some people being interviewed by a TV reporter during Storm Babet, they were standing on the coast with a couple of young children.
But then, is it any use telling such stupid people what they should or should not do?