Ask 'What am I missing?' before major decisions

Treat a confident feeling before a high-stakes decision as a cue to check what your competence map is omitting.

Why it works

Confidence is a feeling generated by familiarity and fluency, not by accuracy. High confidence inside a domain can mask the unseen edges — what you would have needed to know to include the unknown unknowns. The question "what am I missing?" is a forcing function that recruits deliberate reflection to counteract the automatic confidence signal.

How to do it

1. Before a significant decision inside an area you feel confident about, write: "What would change my conclusion if I knew it?"
2. Ask a trusted person who knows less about the domain than you — they are more likely to ask the naive questions your expertise suppresses.
3. List the three assumptions the decision depends on most and assess how solid each one is.
4. Give yourself a 24-hour gap between "I know what to do" and "I will do it" for major, irreversible decisions.

Evidence

Premortem techniques — imagining what could go wrong before a decision — have experimental support for improving foresight and reducing overconfidence. The "what am I missing?" prompt is a practical instantiation of the premortem logic. (observational)

The premortem literature is promising but thin on RCT evidence; effects are consistent with broader debiasing research but specific effect sizes vary.

Sources

• Klein (2007), "Performing a Project Premortem," Harvard Business Review

Common mistake

Asking "what am I missing?" and then answering it yourself within the same frame of knowledge — the question only works if you genuinely seek unfamiliar perspectives.