# wall (range-end)

The value of a parameter at which a window ends.

- Computed level: L10 (depth in the emergence graph, not abstraction)
- Status: published  ·  Domain: systems  ·  Arena: E13

## Emergence
**Emerges from:** [window](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-window.range), [parameter](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-parameter.condition), [boundary](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-boundary.limit), [change](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-change.process)

**Through:** The components jointly mark where a persistent thing ceases to exist as such, defined by a parameter's shift at the edge of its viable range.

**Novel properties:**
- end value of a range
- transition threshold
- persistence boundary

## Examples
- The Chernobyl Exclusion Zone's 30-km boundary marks where radiation levels drop below the safety threshold for human habitation. *(environment)*
- In the TCP congestion control algorithm, the receive window ends when the buffer reaches its maximum capacity of 65,535 bytes. *(computing)*
- The U.S. poverty line for a family of four ends at $30,000 annual income, defining eligibility for federal assistance programs. *(economics)*

## Used by
- [abstraction](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-abstraction.process) (L16)
- [alive](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-alive.biological) (L15)
- [ambush](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-ambush.attack) (L11)
- [ancient](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-ancient.temporal) (L18)
- [at capacity](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-at-capacity.threshold) (L13)
- [autonomy](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-autonomy.self-governed) (L15)
- [balance](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-balance.state) (L15)
- [best practice](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-best-practice.standard) (L17)
- [bleeding edge](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-bleeding-edge.threshold) (L15)
- [boiling over](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-boiling-over.threshold) (L19)
- [boiling the frog](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-boiling-the-frog.drift) (L14)
- [breaking point](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-breaking-point.threshold) (L14)
- [brink](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-brink.edge) (L12)
- [buffer](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-buffer.region) (L13)
- [capacity](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-capacity.size) (L11)
- [chain reaction](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-chain-reaction.stacked) (L17)
- [chaos](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-chaos.unpredictable-drift) (L12)
- [collapse](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-collapse.failure) (L14)
- [complex](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-complex.structured) (L18)
- [constraint](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-constraint.limiting) (L12)
- [context](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-context.surrounding-conditions) (L11)
- [contradiction](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-contradiction.logical) (L11)
- [corruption](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-corruption.process) (L15)
- [critical mass](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-critical-mass.threshold) (L15)
- [crossed the line](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-crossed-the-line.threshold) (L18)
- [cusp](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-cusp.threshold) (L14)
- [cutting corners](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-cutting-corners.margin) (L15)
- [cycle](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-cycle.loop) (L15)
- [danger](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-danger.condition) (L19)
- [death by a thousand cuts](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-death-by-a-thousand-cuts.drift) (L15)
- [decay](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-decay.process) (L15)
- [deferred maintenance](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-deferred-maintenance.upkeep) (L15)
- [dependence](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-dependence.condition) (L11)
- [dissonance](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-dissonance.conflict) (L15)
- [domino effect](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-domino-effect.stacked) (L15)
- [doomed](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-doomed.inevitable) (L16)
- [dropping balls](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-dropping-balls.capacity) (L19)
- [essence](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-essence.core) (L17)
- [exhaustion](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-exhaustion.capacity) (L15)
- [extreme](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-extreme.position) (L12)

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