Too much for too few

I spend about 25 mins on a train most weekday mornings and evenings going to and from work. I, and all other passengers, are subjected to repeat (usually automated) audio messages explaining what other stations we can get to if we get off at a given station; how we should mind the gap or step down to a platform should we alight there; how we should watch out for and report beggars; and (less often) how we shouldn't put our feet up on the chairs (I actually like this one). Anyway, I'd be surprised if any of these messages are useful to more than 5% of the travelling passengers at peak times. By the way, the lack of vacant seats at these times avoids abuse by dirty shoes. Almost everyone (you'd like to think that would be everyone, but I expect not quite) knows where they are going, and how to get there. That's presumably why they are on that train. Visually imparted information is less intrusive, however, in my experience still accompanied by audio. So, if it's not someone enlightening us all on their mobile phone about how they are "on the train", or the tinny "tssss tssss tssss" of an mp3 music player 6 seats away, or dirty seats, the (possibly shrinking) masses trying to quietly read the newspaper or a book are blasted by endless SWT babble. I get a similar feeling of disproportion when the weather man or woman spends about 25% of their forecast telling me how wet and windy it's going to be for the 13 rabbits and 26 sheep living in N. W. Scotland.