Why does red teaming fail?

The most common reason red teaming fails: Going through the motions of devil's advocacy without genuine intent to find flaws. You ask 'what could go wrong?' and generate comfortable, easily dismissed objections that leave your original schema untouched. This is confirmation bias wearing a red team costume. The test: if your red team exercise has never caused you to actually change a belief, you are not red teaming — you are performing.

The fix: Pick one belief you currently hold with high confidence — about your career, your team, a market trend, or a personal relationship. Write it as a single declarative statement. Now spend 10 minutes writing the strongest possible case against it. Do not write a weak objection you can easily dismiss. Write the version that a smart, well-informed adversary would make — the argument that, if true, would force you to abandon or significantly revise your schema. If you cannot generate a strong counterargument, you do not understand your own position well enough to defend it.

The underlying principle is straightforward: Deliberately try to break your own mental model before relying on it.