Hard evidence of the existence of a parallel universe has recently surfaced, delighting physicists, confounding naysayers, and blowing the minds of independent book shop lovers.Tesco, the British super-supermarket chain that sells, amongst other non-grocery items, books, is, at its Wirral store in Liverpool, promoting the indie bookshop across the street in an effort to improve community relations.Through signage in its book department, Tesco is advising its customers that:“For a wider selection of titles and book-buying advice, why not cross the road to Lingham’s, where the specialist staff would love to help you.”Lingham’s has faced tough competition from the corporate behemoth,...