Hi guys, I had an idea the other day about riding gravity into the smaller 5th dimension and then jumping out of it back to normal space time as a way of FTL travel. Now i don't know if this is the right place to ask questions like this but what would the feasibility/problems be like for such an idea and how would your think it could be done... According to what i have read in string theory gravity appears to leak into higher dimensions, if a spaceship could also leak into this higher dimension (5th) then travel in this dimension and jump out of it at a desired location it would avoid the limit of light speed. I know such theories of hyperspace might be similar I'm wondering if theoretically one could jump into the 5th dimension (which would be a great deal smaller than the 4d universe according to some theories i've read) travel at sublight in the 5th dimension and then jump out to wherever it is they desired. Mapping the entire universe onto a milimeter or smaller sized 5th dimension reducing the ship to something of this scale and then jumping back out again. This is an idea i had for a book, it would allow almost instant travel throughout the universe. What do you think?