The "butterfly effect" which Barcelona president Joan Laporta imagined when he mortgaged chunks of the club's future so he could immediately invest a couple of hundred million euros in transfer fees and wages, was that of an isolated, unattractive footballing larva transforming into a beautiful, colourful, much-admired creature. However, the impact which the brutal injuries suffered by Ronald Araujo and Jules Kounde on international duty threatens to have is the infamous kind: where the flap of even the smallest set of insect wings, at the wrong time in the wrong place, can cause catastrophic, ever-expanding consequences.