Horizontal bi-lateral occipital condyles synchronize from vertical
bi-lateral sacroiliac planes; designed by body and engineered as
load levelers/ equalizers/ stabilizers.

Physic laws program by pattern spinal vertical perpendicular structure
relative to the keystone- sacral planes.

Sacral keystone anterior / horizontal sacral plane angles determine 24
vertebrae txyz planes. Innate keystone planes reciprocate superior;
trigger reverse switch-back counter-balance mechanical compensating
vectors, relative sacral plane angles degree.