How do I practice error cascades?

The most direct way to practice error cascades is through a focused exercise: Pick one decision you made in the past month that led to further downstream decisions — a commitment, a purchase, a delegation, a plan. Trace the chain forward: what subsequent actions depended on that initial choice? Now ask one question about the original decision: what assumption did it rest on, and did you verify that assumption before the downstream actions began? Write down the chain and the unverified assumption. You have just mapped a potential error cascade in your own recent history. Time: 15 minutes.

Common pitfall: Treating error cascades as a problem of scale rather than a problem of coupling. People assume that small errors stay small — that a minor miscalculation will produce a minor consequence. This confuses the size of the initial error with the size of the downstream effect. What determines cascade severity is not the magnitude of the first error but the tightness of coupling between the components it touches. A tiny error in a loosely coupled system dissipates. The same tiny error in a tightly coupled system amplifies through every dependent link.

This practice connects to Phase 25 (Error Correction) — building it as a repeatable habit compounds over time.