OK the main flaw that I feel throws this conspiracy theory out the window is this: We have an American in Chicago, living in a town that was familiar to him with a simple "grid" system infrastructure which would have been easy for him to navigate. However,he jumps on a ship and travels to London to commit several murders that he does under the cover of darkness in an unfamiliar city that is basically a "labyrinth" of confusing streets and gets away every time? I think not! Jack the Ripper was a local to the area and that is how he managed to elude capture - I know its not as exciting but do we want reality or entertainment.