I in 8 million meeting

I was crossing Leicester Square in the centre of London, and was - quite literally - thinking to myself how nice it was to be in a city where the sheer number of people meant it was so extra ordinarily unlikely that you could possibly just bump into someone you know that it wasn't necessary to consider the possibility and how nice it was, for once, to be part of an anonymous crowd. I live in a small town in Scotland and was enjoying the contrast. I heard a shout behind me. A shout of my name. I turned to find someone I had worked with more than 10 years earlier, who I had not seen or heard of since and who was also wandering aimlessly across Leicester Square. They had just been thinking how odd it was to be in a city of 8 million people and have no chance of seeing a known face. We spoke for a few minutes, catching up on our lives and ending by agreeing that if bizarre coincidences didn't happen it would be a far stranger Universe than it is.