This refers to when two or more people encounter each other in completely coincidental fashion. You might notice your old classmate from three countries away is now your waiter in a place you had no reason to expect them in, and you might say “wow, what a small world”. You might notice two people who you know from completely different spheres miraculously know each other. You might recognize by chance that your penpal has made a cameo at a venue you’re at.
But what was your most profoundly coincidental encounter?
Small world ia a scam! When I was on vacation in London my father and I heard the “fact” on the tourist bus that you couldn’t be on Picadilly Circus more than 43 minutes or so before meeting someone you know. We sat there for over an hour and didn’t see anyone.
But then again, we were at an airfield for a pilot meeting earlier during that vacation. And it turned out that the guy who owned that airfield was stationed in Germany at the same town and at the same time my father lived there as a child.