The 7 tetractys=28 and when doubled forms 7 star tetrahedron tetractys which is the 56 spheres of the 64 tetrahedron grid, the 7 star tetrahedron tetractys is made up of 37 points and the first hexagonal numbers 1+7+19+37=64, the flower of life that encodes the 64 tetrahedron grid has 84 vesica piscis and the 7 tetrahedral tetracty=84 showing a correspondence. The 7 tetrahedral tetracty when doubled forms the 7 star tetrahedral tetracty=168 and because of this the flower of life is doubled forming a torus, the E8 lie group is a torus and in 3D is constructed out of tetrahedra so it is the tetrahedron grid and the E8 lie group has 168 roots showing a correspondence.