Back in the 20th century, people watching Doctor Who series thought that Tardis - a space which was much bigger inside than on the outside - was pure fantasy. In the 22nd century, scientists proved them wrong by coiling dimensions into a "gravitational pocket", which allowed them to break the laws of geometry. Obviously, this technology has proven crucial for both transportation and warfare - even though did not provide us with the time travel, which the original Tardis was capable of...