Scroll to first graphic and and a diagonal trjectory from any corner vertex that goes through the 2D triangle.
https://veraviana.net/enclosing/inside-the-cube/
Makes me think of XYZ { as me }, as the vertex, as a bilateral object * i * seeing the 2D square green triangle and my ability to pass through it, on this digaonal trajectory -- d-iagonal aka 4th-D when XYZ is abc-d-- now Im on the other side of the 2D green triangle and see that Im part of the XYZ { abc } and im the d-iagonal 4th D perspective, outside of 3D tetrahedron, seeing 3D object, 2D object, vertexes, etc.
Im object and subject, Im Roger Zelazny and Phillip K Dick, via reading their mind via their sci-fi fantasy worlds.
Im Philip Farmer { To Our Scattered Bodies Go }, Im Samuel R Delaney { Dalghren }, Im Piers Anthony { The Blue Adept }, and mostly Im Bucky Fuller { Synergetics 1 an 2 }.
I am a complexity of these complexities, and a Stranger In Strange Land { Earth }, Sol, Milky Way etc. Mother, Father, Brother and Sister, Friends, and strangers are all me and I them.