So yesterday I went for a walk, and went to stand on a motorway overbridge and look at traffic. I admit when I left home I was thinking of jumping, but as soon as I saw how low it was (barely 4m, maybe 5 at a massive push) I threw away that idea because I figured the most likely outcome would be a broken ankle. So I just stood there watching traffic for a while, and counting marked police cars. I got up to 7 (I was aiming for 10, then I was going to walk home), and what should happen but a uniformed...