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.
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
through: 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.
- model boundary misalignment
- unmapped parameter range
Chain to foundations
as tree
- known unknownL14
- modelL9
- patternL0
- likeL3
- actL3
- saysL8
- messageL7
- informationL6
- differenceL1 (shown above)
- marksL5
- differenceL1 (shown above)
- partL1
- changeL1 (shown above)
- patternL0 (shown above)
- surfaceL4
- boundaryL2
- spaceL0 (shown above)
- differenceL1 (shown above)
- changeL1 (shown above)
- touchL3
- spaceL0 (shown above)
- boundaryL2 (shown above)
- interactionL2 (shown above)
- changeL1 (shown above)
- partL1 (shown above)
- boundaryL2
- patternL0 (shown above)
- entitiesL4
- othersL2 (shown above)
- boundaryL2 (shown above)
- distinctL3
- differenceL1 (shown above)
- othersL2 (shown above)
- spaceL0 (shown above)
- putL3
- informationL6
- othersL2 (shown above)
- distinctL3 (shown above)
- entitiesL4 (shown above)
- getL5
- makeL4 (shown above)
- messageL7
- parameterL4
- boundaryL2 (shown above)
- rangeL3
- modelL9
Neighborhood
Concepts that depend on this one above; what it is built from below.