All main political positions can then be found in different segments of the diamond that is created by the 2-dimensional heterogeneity.
Its almost the same as this. But as the difference is that each edge of the triangle acts as a dimension marker, (economic, social, "radicalism" or whatever) it allows the 3-D data set to be viewed in 2-D, allowing for 4 dimension markers on a tetrahedron.
I find it easier to view 2-D maps than 3-D maps and definitely easier to view 3-D than 4-D maps!
Hope that makes sense.
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