Use reverse brainstorming to find failure modes

Ask "how would we make this fail?" instead of "how do we make this succeed?"

Why it works

Forward brainstorming (how to succeed) tends to reinforce the plan’s existing direction, because the team is already oriented toward the goal. Reversing the question — actively generating ways to make the plan fail — activates different associations and removes the optimism bias that forward planning carries. People who would hesitate to raise a risk directly often surface it enthusiastically when framed as sabotage.

How to do it

1. State the goal of the plan, then ask: "If we were trying to ensure this fails as completely as possible, what would we do?"
2. Generate failure modes without filtering — the point is quantity and imagination, not realism yet.
3. Then reverse: for each failure mode, ask "does any part of our current plan accidentally do this?"
4. The overlaps between the sabotage list and the current plan are the risk priorities.

Evidence

Reverse brainstorming is a practitioner technique in design thinking and risk management. The underlying mechanism — that negation activates different knowledge structures — is consistent with creativity research, though the specific technique is not independently well studied. (mechanistic)

Mechanistic rationale is sound; whether reverse brainstorming outperforms well-facilitated forward brainstorming or pre-mortem analysis in real settings has not been directly compared.

Common mistake

Filtering failure modes during generation ("that wouldn’t really happen") rather than letting the list be messy first. The filtering step comes after generation; premature filtering is what causes teams to miss their actual vulnerabilities.