Dependency graph

Dependency graph — a structure where each element requires the ones beneath it. The Financial Order of Operations is one: without a buffer, surprises land on the credit card; without health cover, a hospital bill drains the fund; without the fund, income gaps force selling investments at the bottom. Skipping a rung doesn’t skip the risk — it just moves the failure uphill to a more expensive layer.

First used in: 1.2 · The PH order of operations