Four reversal pairs as compression struts on the body diagonals of a cube; the links between the eight primes as tension cables. It stands only because everything is pre-tensioned at once — drag a prime and the whole structure answers.
A tensegrity is not a shape but a behaviour. It has no relaxed state that is also a standing state: every strut is pre-compressed and every cable pre-tensioned at rest, and that permanent mutual tension is the integrity. Remove the pre-stress and you do not get a serene structure — you get a heap. Coherence here is something continuously achieved, never possessed.
The struts are the four reversal pairs — 13·31, 17·71, 37·73, 79·97 — each holding a prime apart from its mirror, since reversal is separation (n − rev n = 9 × digit-difference, never zero). They sit on the body diagonals of a cube because, in digit-logarithm coordinates, reversal is the antipodal map. The cables are the other relations between the eight primes: complementation (digits summing to 20) and single digit-steps. Their tension is shown by kind, not magnitude — the relations are qualitative, and no cable is claimed to pull harder than another.
Drag a prime and the whole net responds: no strut moves alone, because the eight are not independently adjustable — they cohere only through the tension between them. The restoration slider sets how the structure recovers: stiff and near-instant at one end, slow and ringing at the other, where a displaced structure overshoots and oscillates before settling — visiting its opposite on the way home. Cut a cable and watch whether the structure absorbs the loss or loses its shape; which relations are load-bearing and which incidental is something to discover by handling, not by being told. Whether psychosocial coherence behaves this way — pre-stressed, globally coupled, resilient or brittle by structure rather than by will — is the debate this object exists to provoke.
This is illustrative dynamics: a spring-coupled network that behaves like a tensegrity, with the reversal struts held rigid and the cables elastic. It is not certified as a force-balanced tensegrity solution. The prime relations are forced arithmetic; the cube and the tensegrity form are notational; every reading of strategy is imported.