# metacognition (stacked)

a model whose subject is another model, taking that model's window as its own parameter, so it sees drift the model under it cannot report from inside.

- Computed level: L15 (depth in the emergence graph, not abstraction)
- Status: review  ·  Domain: epistemic

## Emergence
**Emerges from:** [model](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-model.representation), [self-model](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-self-model.reflexive), [subject](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-subject.entity), [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), [take](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-take.acquisition), [see](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-see.visual), [drift](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-drift.aimless), [report](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-report.information), [inside](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-inside.spatial)

**Through:** A second model takes the first model's window as the quantity it tracks, so movement of that window becomes visible from one level up even though it is invisible from within.

**Novel properties:**
- stacked modeling
- window-as-parameter tracking
- externally visible drift

## Examples
- A student pauses over a practice exam and marks which answers were guesses, predicting the score before it is graded. *(education)*
- A flight computer cross-checks its inertial estimate against GPS and widens its own error bounds when the two drift apart. *(engineering)*
- Ensemble forecasting runs many weather models and treats their spread, not any single run, as the forecast's stated uncertainty. *(meteorology)*

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