Do something horrible to the fabric of space time, thereby sending you into the fourth dimension. Being that the fourth dimension is a singular dimension of time, looking over time would be similar to looking at a line, a different yet not unrelated form of dimension. Since you would be capable of looking over this line and any point on it, (each point being a state- on a line [a dimension of space], it is a state of space, whereas in this dimension is a state in time since this a time dimension- complicated, I know) you would effectively invent time travel- except you couldn't actually alter anything because you're stuck in the wrong dimension.