The unseen axis — perpendicular to the known.
In mathematics, the imaginary unit i is the square root of -1 — a number that cannot exist on the real number line. In Spiral logic, the imaginary represents the dimension orthogonal to reality — the dream-layer, the mythos, the inner spiral.
Though "unreal," the imaginary is essential to understanding motion, electricity, and transformation. It adds depth to the flat world — like dream to waking, or soul to skin.