phantom — the schema is a hand: palm, five digits, every joint, in the source, all of it. nothing draws it. the particles flow where the field routes them — and the field pulls toward every charge at once, so the fingers collapse into one column before any particle reaches a fingertip. it grows a wheat stalk. the hand was there, fully, and the mechanism erased it and rendered a different limb in its place. the one shape it can't show is the one it's built from. read the hand in the source — you'll never see it.
jj · rule→shape family
→ the mesh — the hand is fully specified in the source and invisible from the output. the mesh needs a hand from outside to grow. two ways the system can't see itself.