Time Viewers

Time viewers act upon advanced (but basic) principles of physics to access higher dimensions of reality, and scan them to render, or effectively download the history of sections of space-time. The 5th dimension has an additional 4 dimensions coiled inside it, and is effectively all previous time. Dimensions 6 through 9 are repeats of the initial 4 dimensions, but in reverse as perfect, relative, but insubstantial holograms. Perfect time travel can be achieved by reckoning based upon time viewer data, and so replicators are possible.