Made in Blender. First project of this weekend! I'll probably have more later. Explanation (Warning: "Technical" stuff): So, the cubes which make up the wall are, in this case, supposed to represent the shadows of three-dimensional cubes rotated in four-dimensional space. By rotating it a certain way, the cube will appear to move inside-out, which is the process which was shown in the inverting cube array. Now, since Blender only has three spatial dimensions, I had to just make it look like the cubes were rotating in four dimensions (and, as a result, seeming to fold up in three). To make sure you can't see the leftover squares, I pushed them out to the edge after the process was completed. You can still see some of them, since I didn't make the transition instantaneous.