Walking back home on a warm evening I'm thrilled to see a black cat cross my path halfway down Finsbury Park Road. I'm already anticipating the good luck vibes, when a second black cat emerges from the shadows a couple of doors further down. It waits and watches me. A double black cat path-crossing... it's a confusing situation. Does it mean twice as much good luck or (more likely) does the second black cat erase the good luck of the first? Or perhaps even create bad luck? If this is the case, are there any complicated hand signals I can offer that might block this black cat magic? I'm confused and contemplate crossing the road... but the second cat makes a run for it and nips in front of me - clearly a genuine crossing of my path.

These could be long term Luck Cats, in which case it might be several years before I can safely say what the final result of this strange incident will be. Interestingly*, it would seem that it's only in Britain that black cats symbolise good luck. Everywhere else in the world sees them as bringing bad news.

* Obviously I'm using the word "interestingly" to mean "not-very-interestingly"