How do we occupy our time whilst idle? Most people around me are reading – papers, books; some are on their phones or laptops; one fellow is munching and watching – not in a disturbing manner, just in one of a passive bystander.

This last is a personal favourite – I may be writing, but I’m still observing. It’s quite possible he is being unnerved by me, but he doesn’t have a channel via which to express his alarm, as I do. The thought tickles me – is it the lowest kind of schadenfreude to take pleasure in discomfiture of your causing? In that case I must be a sociopathic degenerate – and I’m quite happy in this assessment, for it’s helped me to while the time.

Now let me check that I haven’t missed my stop.