Metatron's Cube not only contains the 2 dimensional shapes and 3 dimensional Platonic Solids, it also contains the 4 dimensional Tesseract. This is extremely significant as it complete a sequence of Transcendence. Consider that (in Euclidian Terms) ALL of creation follows a pattern of Transcendence.
We can start with sub-atomic particles. These will be our arbitrary baseline. They come together to make Atoms...which are a higher, or transcendent order, above sub-atomics. Atoms are a Greater Whole than their preceding parts. Next, Atoms come together to make Molecules. Molecules are transcendent to Atoms and are thus (again) Greater Wholes than their respective parts. They represent a higher order of reality. Next Molecules come together to form Cells. Cells are again, a higher order or Greater Whole than their parts. Of course we can follow this pattern though till we get to the whole universe...it remains True and Constant at every step.
Metatron's Cube gives us a dimensional map that shows 2d, 3d and 4d examples of transcendence which have very deep and obvious philosophical connotations.
It usually only requires 3 points of reference in any given number sequence to work out a pattern. For example 2,4,8...the next number would clearly be 16. This is a simple but effective example of what I am saying. If we want to understand where we are in 3 dimensional terms then we must understand the CONTEXT that 3 dimensions sit within. Thus we would look at what the world is like in 2 dimensions and then we would look at it in 4 dimensions and through understanding the proper CONTEXT, only then can we appreciate the truth of the 3 dimensional experience. And as with a continuous number sequence...we can use the 2d, 3d, and 4d appreciation to further extrapolate the 5th d, 6th d, 7th d, and so forth. The chain is seemingly endless in potential.
Understand that we can NOT effectively measure the 3rd dimension with only 3 dimensional tools! Why? Because the 3rd dimension is a Transcendence of the 2nd dimension and a part of the Greater Whole of the 4th dimension. CONTEXT determines CONTENT!!! The 3rd dimension can NOT be it's own CONTEXT as it is a part of a much greater chain of being.
It is worth noting that science stacks in the same transcendental fashion. Physics being the baseline, is transcended by Chemistry. Which in turn is transcended by Biology, which is transcended by Psychology which is ultimately transcended by Spirituality.
Something to consider at any rate.