An engineering drawing of Dave's 0-sphere, treated as if it were a machine part: a core holding two quantum dots (charge 0), two inward vectors (−1) and two outward edges (+1). Slide explode to pull the parts apart along their axes; tap a part to highlight its row in the parts list. The seed sets the revision: dimensions and part tolerances vary slightly.

MODEL the 0-sphere (2 × 0, 2 × −1, 2 × +1, Σ = 0) is Dave's. ANALOGY dimensions, materials and tolerances are invented drawing conventions, not a physical object. Self-check: the parts list sums to Σ = 0, has exactly six charged parts, and every exploded part returns to its assembled position at 0 %. ← SaPpH{{i}}on