 These tales of ratiocination owe most of their popularity to being something in a new key . I do not mean to say that they are not ingenious – but people think them more ingenious than they are – on account of their method and air of method . In the " Murders in the Rue Morgue " , for instance , where is the ingenuity in unraveling a web which you yourself ... have woven for the express purpose of unraveling ? " 
