Original sentence: Mathematically, this implies n < 1, because, the rays follow the shortest path, hence, theory creates a perfect cloak.The goal then is to create no discernible difference between a cloaked volume of space and the propagation of electromagnetic waves through empty space
Edited sentence: Mathematically, this implies n < 1, because, the rays follow the shortest path, hence, theory creates a perfect concealment.The goal then is to create no discernible difference between a concealment volume of space and the propagation of electromagnetic waves through empty space