A being living in a 4D world can see all sides of a 3D object simultaneously.
Even the outside and the inside. The downside and the upside.
Plain humans, in their cubic reality, are limited to individual perspectives.
Tetraspace is free to observe all perspectives. Our eye can go in all directions.
But when you try being everywhere, you are dissipated and end up being nowhere.
Outer space is mostly empty, yet there is a star here and there.