With all this under your belt, you’ll be directly manipulating a tesseract, best thought of as a 4D cube. Since we can’t see 4D shapes in 3D space (never mind the 2D plane of an iPad screen ...

Computer animation may be a lot better than it used to be, but it’s been around for quite a while. This is an example of one of the older bits, dating way back to 1965, and it features some 4D ...