Much has been much written about the scourge of modern day washing that is the missing sock. It’s the bane of many a life, it is the subject of much conjecture and speculation and it is a mystery that, if Fisher & Paykel’s new Lost Sock campaign is anything to go by, seems likely to remain forever unsolved, because, despite the best efforts of its talented team of designers, engineers and scienticians, the appliance maker has admitted that it is the one thing it hasn’t quite managed to figure out.