I sit down at the kitchen table and slide my coffee cup to the left one foot. A second world line is created that is exactly the same as the first ......except the cup is in a different spot. Both lines are so similar and close in time and space that the miraculous event goes un-noticed and un-applauded.

Every event and object of a parallel world that does NOT differ from our present one IS the present one and is shared over time and space, with all the alternates. Only the differences would be detectable and those differences would be by definition elsewhere. We could have "parallel" worlds by the zillions glued so tight together as to be "too close to see".