brink · edge
a parameter whose window is narrower than those of related things, such that its wall is near the current value and small drift could end what persists.
Examples
- The International Space Station requires reboosts every few months to avoid atmospheric drag lowering its orbit below 400 km. engineering
- In 2008, Bear Stearns collapsed when its liquidity window dropped below $2 billion amid frantic trading. economics
- The Vaquita porpoise population fell to under 20 individuals, making inbreeding depression a near-term threat to survival. biology
Emergence
through: These components together describe how a system remains stable only as long as an unstably positioned, narrowly bounded parameter avoids crossing a critical threshold due to undirected change.
- precarious stability
- threshold vulnerability
- sensitivity to drift
Chain to foundations
as tree
- brinkL12
- parameterL4
- windowL7
- parameterL4 (shown above)
- rangeL3
- boundaryL2 (shown above)
- persistL1 (shown above)
- changeL1 (shown above)
- outsideL6
- partL1 (shown above)
- wallL10
- driftL11
- parameterL4 (shown above)
- changeL1 (shown above)
- goL3
- makeL4
- nothingL10
- noneL9
- differenceL1 (shown above)
- amountL8
- offL2
- spaceL0 (shown above)
- differenceL1 (shown above)
- noneL9
- wayL9
- spaceL0 (shown above)
- linksL8
- partL1 (shown above)
- connectsL7
- flowL3
- interactionL2 (shown above)
- persistL1 (shown above)
- structureL2 (shown above)
- broughtL6
- happenL2
- persistL1 (shown above)
- changeL1 (shown above)
- narrowL5
- nearL2
- spaceL0 (shown above)
- differenceL1 (shown above)
- relatedL4
- smallL4 (shown above)
- currentL4
Neighborhood
Concepts that depend on this one above; what it is built from below.