Mirror Plane I
The boundary that divides a thing in two is rarely the one set down by measure.
Almost the whole of this surface is built to the right angle, form meeting form in hard corners with an exactitude that leaves nothing to chance. Yet the line that matters most answers to none of that order. A single curve descends the height of the plate and opens it into two fields, one pale and one dark. It is the only edge here that no straightedge has touched.
Geometry can perfect each half, yet has no say in the decision that governs everything: where one field ends and the next begins. That belongs to the curve alone. Precision can fill a surface; it cannot draw its own border.
For all the exactitude around it, the eye goes first to the single line that yielded, the one soft authority the hard order can frame but never command.