# the ship has sailed (threshold)

*Ordinarily means:* It is too late to do something because the opportunity has already passed.

A parameter has drifted past the wall where action could still change the outcome, and no maintenance can bring it back within range.

- Computed level: L15 (depth in the emergence graph, not abstraction)
- Status: review  ·  Domain: windows opening and closing  ·  Arena: emergence

## Emergence
**Emerges from:** [drift](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-drift.aimless), [wall](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-wall.range-end), [maintenance](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-maintenance.upkeep), [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:** emergence.novel_properties

**Novel properties:**
- window-of-opportunity.threshold

## Examples
- The Fukushima Daiichi nuclear plant's cooling systems failed after the 2011 tsunami, making core meltdown inevitable despite later efforts. *(engineering)*
- By the time CO2 levels reached 420 ppm in 2022, Arctic summer sea ice volume had fallen below the threshold for recovery. *(climate)*
- After Blockbuster passed on buying Netflix in 2000, video rental dominance collapsed within a decade. *(economics)*

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