Daft as it may seem, it has taken me four decades to realise that there are over seven billion people on earth, and most people we come into contact with in our lives we will never encounter ever again. If you’re lucky enough to live in a little village, then you may be surrounded by friends for life. But for the rest of us? There is our family and the smattering of others we occasionally entertain. In some ways, the Internet has made our world smaller; some have that reach to be known to all. But the rest of us: we’re just grains of sand, blown by the wind.