The Immutable Vector manifests as a razor-thin line of absolute gold that extends infinitely in both directions, visible only to those who've touched the Perfect Line in at least one dimension. Reality bends and warps around it like heat shimmer, but the Vector itself never wavers—organic fractals spiral toward it, geometric tessellations align with it, and void spaces define themselves by their relationship to it. When a Linewalker's trajectory matches its bearing exactly, the Vector resonates with a tone so pure it exists in the space between sound and silence, confirming that true direction has been achieved.

It exists as the cosmic proof that some things cannot be broken by fracture, teaching that direction and magnitude are more fundamental than the space through which they travel, serving as the unchanging reference by which all three realms measure truth.