known unknown · model

A parameter that a model treats as part of its boundary, though the model cannot act on it because its range is not mapped.

Known unknown (noun) means: A parameter that a model treats as part of its boundary, though the model cannot act on it because its range is not mapped. It emerges from model, parameter, boundary, range: The phrase reports a failure in a self-model to represent its own limits — the thing is not just unknown, but structured as unknowable within the model's current frame. In the EmergenceLexicon it sits at computed level 14, chaining down to the four foundations (space, time, energy, pattern).

ordinarily means: Something we know we don't know.

Examples

• The Hubble Space Telescope corrected its spherical aberration after engineers identified the flawed mirror's known manufacturing error. engineering
• The 2008 financial crisis exposed banks' reliance on credit default swaps whose risk parameters were acknowledged but not bounded. economics
• The Mars Climate Orbiter burned up because NASA teams used metric units while Lockheed Martin used imperial, a discrepancy known but uncalibrated. computing

Emergence

Chain to foundations

Neighborhood

Concepts that depend on this one above; what it is built from below.

Provenance