cusp · threshold
Ask Prometheusa parameter whose window overlaps with another, where the crossing leads into the second rather than ending the first
Cusp (noun) means: a parameter whose window overlaps with another, where the crossing leads into the second rather than ending the first. It emerges from parameter, window, wall, drift: The drift of a parameter toward a wall of its window coincides with the opening of an adjacent window, and the crossing of the boundary leads into the second state rather than terminating the first. In the EmergenceLexicon it sits at computed level 12, chaining down to the four foundations (space, time, energy, pattern).
Examples
- In 2007, the Arctic sea ice extent dropped below 4.2 million km², crossing a threshold scientists now associate with irreversible summer melt trends. climate
- The Therac-25 radiation therapy machine allowed parameter drift in beam intensity until a software threshold was crossed, delivering lethal doses. engineering
- Bitcoin’s block reward halving in May 2020 crossed a profitability threshold, triggering a shift in mining pool dominance from China to Central Asia. economics
Emergence
through: The drift of a parameter toward a wall of its window coincides with the opening of an adjacent window, and the crossing of the boundary leads into the second state rather than terminating the first.
- transition priority
- asymmetric window crossing
- concurrent persistence and change
Chain to foundations
full chain as text (201 steps)
Neighborhood
Concepts that depend on this one above; what it is built from below.