For [a system], the failure
modes: what fails, how it shows
up, what it causes downstream,
how likely detection is before
harm. Rank them, mark the three
worth designing against.

Run a Failure Modes Analysis

Ranked by detectability, not just by likelihood.

Prompt

For [a described system], work through the failure modes: what can fail, how it shows up, what it causes downstream, and how likely detection is before harm. Rank them and mark the three worth designing against.