Try this one: Two men grow-up on different sides of the street. One on a council estate, the other in a flat-fronted Georgian four-storey terrace with plantation shutters, a giant etched-glass number over the door and a magimix juicer (used twice). The man in the council flat, whilst high on Cash In The Attic, comes-up with the idea for an iPhone App which cleverly allows the user to see the back of their head - in real time. His neighbour over the road then brings the app to market - achieving global sales of 22m Who is right?