You can visualize the 4th dimension. Just imagine 3d space moving through time. 5 is where is starts to be problematic.
BTW the video is ok until 4:30. Then it quickly degrades into nonsense, not just more complicated than needed.
BTW the video is ok until 4:30. Then it quickly degrades into nonsense, not just more complicated than needed.
This is the problem. The 4th dimension is not time. We can represent time as the 4th dimension in a system if we want to, but you can have systems where the 4th dimension is not time.
A good example is when people create a matrix representing links in webpages. If you limit your universe to online 100 webpages and their interconnections, you can get a vector for each webpage. The vector is a point in 100 dimension space. The 4th dimension is not "time" but "if the 4th website on the list links to me."
Also, visualizing an n dimensional vector is not very interesting. A vector indicates a point, and a point looks the same in any number of dimensions.