# crossed the line (threshold)

*Ordinarily means:* People say this when someone has gone too far and passed a limit.

A parameter has moved across a wall that marks the edge of a window, but the parts remain and no removal occurred — the thing persists in a new state on the other side of what was previously allowed.

- Computed level: L18 (depth in the emergence graph, not abstraction)
- Status: review  ·  Domain: social  ·  Arena: behavior

## Emergence
**Emerges from:** [window](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-window.range), [wall](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-wall.range-end), [parameter](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-parameter.condition), [persist](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-persist.continue), [cross](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-cross.symbol)

**Through:** crossed without removal

**Novel properties:**
- new-state-on-other-side

## Examples
- In 2003, the Northeast Blackout began when a tree branch in Ohio crossed into a high-voltage transmission corridor, triggering cascading failures across the grid. *(engineering)*
- The Aral Sea's shoreline receded past the 40-meter depth threshold by 1987, exposing seabed and ending commercial fishing in the region. *(environment)*
- On May 7, 1997, the UK's Treasury lost control of inflation targeting when CPI exceeded 3% for three consecutive months, breaching the policy band. *(economics)*

---
*Canonical: https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-crossed-the-line.threshold*  
*Structured data: https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-crossed-the-line.threshold.json*  
*Every definition provably resolves to space, time, energy and pattern.*