No. 339 · Fixing problems · Systems
Hysteresis
Remove the cause of a problem, and its effects may still linger.
In the Almanac
“Europe’s stubborn unemployment”, 1986 · “Chipotle”, 2015–2018
Both stories in full, three ways to use it and where it misleads.
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Questions
What is Hysteresis?
Hysteresis is when a system doesn't return to where it started after the pressure is removed. European unemployment stayed high long after the 1970s shocks faded, and Chipotle's sales stayed low long after its food-safety fixes.
How do you use Hysteresis?
To use it, don't assume things will snap back on their own. Act early before temporary setbacks harden, keep skills and networks alive during gaps, and give rebuilt trust extra time. Prevention is usually cheaper than repair.
When does Hysteresis matter?
Hysteresis is one of the 40 mental models for fixing problems, the situations where you ask: Why does this keep going wrong, and how do I fix it for good? Within that, it belongs to “How systems push back”, alongside Bottlenecks, Ecosystems and Feedback Loops.
What is an example of Hysteresis?
Two stories show it at work: Europe’s stubborn unemployment (1986) and Chipotle (2015–2018). Both are told in full in The Mental Models Daily Almanac, which has two stories for each of its 365 models.
Which mental models are related to Hysteresis?
Inertia, Resilience and Horn Effect. Hysteresis itself comes from systems.