A woman walks along a random street, hundreds of miles from home. She passes a phone box where the phone is ringing, and out of curiosity answers it. On the other end of the line is her husband, who addresses her by name. He thinks he is talking to her on her mobile phone, but has got the wrong number.
Some people are scared by a coincidence like that. They assume that it could not possibly happen by random chance, and must have some underlying meaning. In many ways that's the foundation of superstition - and perhaps of one or two religions as well.
But, in truth, science tells us that it's statistically inevitable that these amazing coincidences will occasionally occur - so much so, in fact, that we ought to be far more frightened if they don't happen. So when we discover that Inverclyde's Labour MP Iain McKenzie rented a flat using taxpayers' money, and by completely random chance discovered later that he had accidentally ended up with a fellow Labour MP as his landlady, we shouldn't be scared, and we certainly shouldn't be sceptical of his story. We should simply embrace it as one of those extraordinary phenomena, like the aurora borealis, that enrich our world with so much beauty. And when we discover that, even more remarkably, three other MPs also accidentally rented flats from fellow MPs, we should feel even more enriched.
This is, it must be said, a special moment for those of us who predicted that something truly wonderful would happen if the people of Inverclyde had the good sense to elect McKenzie as their MP.
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I've just heard that George Osborne has been caught sitting in the first-class compartment of a train with a standard-class ticket. He asked the conductor for special permission to stay where he was to avoid having to mix with the plebs, but was refused. As per what happened on a ScotRail train last year, I trust a "big man" arrived on the scene to deliver swift and violent justice to the fare-dodger, with the cheers of fellow passengers and the right-wing press ringing in his ears?