# chokepoint (bottleneck)

a window through which the parameters of many other windows are set

- Computed level: L11 (depth in the emergence graph, not abstraction)
- Status: review  ·  Domain: window  ·  Arena: emergent-systems

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

**Through:** A grouped set of conditions is accessed and adjusted through an opening, enabling coordinated control over multiple parameters.

**Novel properties:**
- centralized parameter access
- structured control interface
- cross-parameter coordination

## Examples
- The TCP protocol's congestion control adjusts packet transmission rates through a single bottleneck router on the transatlantic cable TAT-14. *(computing)*
- In 2011, the Fukushima nuclear plant lost cooling after tsunami flooded backup generators located in a vulnerable basement chokepoint. *(engineering)*
- The Bering Strait funnels 80% of Arctic Ocean freshwater export into the Pacific, regulating global thermohaline circulation. *(physics)*

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