Pamela, what the Waverider is describing sounds a lot like the technique used by the Incunabula/Ong’s hat group. They supposedly had developed inter-dimentional travel. check out tis site:
A lot of the info on the site seems to be disinfo, but then there are pieces of the truth mixed in. Here is another site with another point of view:
Dimentional displacement requires less power and technology then temporal displacement.