The 64 tetrahedron grid is a sub-section of what Buckminster Fuller called the Isotropic Vector Matrix, as are the cube, octahedron, tetrahedron, cuboctahedron, and star-tetrahedron. The 64 grid was brought to our attention by physicist Nassim Haramein who proposes that it is the optimal form to contain sufficient complexity to balance the expansive nature of the sphere with the contractive nature of the tetrahedron. It is also related to the 3 dimensionalization of the Flower of Life.