04 — EDGE

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When does a visual difference become a spatial boundary?

An edge is one of the most elementary cues through which vision organises space. A shift in tone, light, colour or texture may be enough to separate one area from another.

Yet an edge does not necessarily belong to an object. It may indicate a surface, an opening, a change in depth, or simply a discontinuity in visual information.

When context is reduced, its meaning becomes uncertain. The edge remains visible, but what it separates must be inferred.

At this threshold, a visual difference begins to construct space.

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Perception Notes