The minimum time period necessary for all of the tens of millions of "bibs" to emigrate is estimated to be twenty years. In order to cut this down to 5 years the rift is temporarily closed so a new power supply can be installed which will theoretically quadruple the width of the rift. When this action is completed, however, it is discovered that one hundred years has elapsed in the parallel world.
The shortest time needed for all of the tens of millions of "bibs" to migrate is estimated at twenty years. To reduce this period to five years, the rift must be temporarily closed so a new power supply can be installed, which would theoretically quadruple the rift's width. However, upon completion, it turns out that one hundred years have passed in the parallel world.