Figure 4: Investigation of the Requirements for a Structurally Stable
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One vector of restraint allows ball to define complete sphere -- a
quasi-three-dimensional system. It can define a constantly varying
Two vectors: a plane -- a quasi-two-dimensional system.
Three vectors: a line -- a quasi-one-dimensional system.
Four Vectors: a point -- no displacement.
Note the possibility of in place rotating with the position
otherwise fixed by the four vectors of restraint.
The four vectors define the tetrahedron: the first identifiable
"system" -- a primary or minimum subdivision of Universe. The ball
tensionally situated at the center of gravity of the tetrahedron.
Copyright 1999, Estate of Buckminster Fuller, all rights reserved.