How could I not guess that my son would love football?

The last thing Sarah Franklin expected was that her six-year-old son would swap his Superman cape for an Arsenal strip and turn into a soccer obsessive virtually overnightIt was as sudden and irrevocable as a penalty shoot-out. One minute Jonah, our elder son, was all about pirates and superheroes, a new cape the pinnacle of joy. Then, in an identity change Clark Kent would be proud of, the cape was abandoned and he stood before us in studs and Arsenal strip, a fully fledged six-year-old football obsessive.Yes, yes; that small boys like football is a universal truth, one that has fuelled Persil ads and birthday cards for decades. But, stupidl...