There was more logic to Driscoll's history changing attempts than anyone gives Serling credit for. His attempt to warn of Hiroshima's bombing could actually have been done by him arriving a day earlier but he did not to talk to anyone in authority till just before the bombing. The Lusitania is well handled as well and no real plot hole there. As for the assassination attempt delay you can come up with your own reason for that.
Another poster made a strange statement on here. That individual seemed to want Driscoll to save the Titanic from sinking. The Titanic was not actually a historical event just a well remembered incident. The Lusitania had nearly as many dead as Titanic and the Lusitania 90% brought America into WW1. It also caused the Germans to stop bombing passenger ships for two years. The 1915 sinking of the Lusitania was 100 times more important than the Titanic sinking 3 years earlier.
Another poster made a strange statement on here. That individual seemed to want Driscoll to save the Titanic from sinking. The Titanic was not actually a historical event just a well remembered incident. The Lusitania had nearly as many dead as Titanic and the Lusitania 90% brought America into WW1. It also caused the Germans to stop bombing passenger ships for two years. The 1915 sinking of the Lusitania was 100 times more important than the Titanic sinking 3 years earlier.