These four tools are among the most widely used, which is why getting them right matters so much. But the same pattern of popular misuse runs through many more tools that professionals reach for every day.

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Decision logs, for instance, are not the minutes of your meetings. They're not meant to be a record of what was discussed. They should be a record of what was decided, why, and what you expected to happen, written at the moment of the decision so you can return to it honestly later. Pre-mortem is not simply asking what might go wrong. Used properly, it's a structured technique for bypassing the optimism and social pressure that suppress bad news in groups using prospective hindsight: imagining the future has already happened. But the way most teams run it, those are exactly the forces left intact.

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The point is that we already take time and effort to apply some of these tools. If we apply them right, through small tweaks, we can boost our decisions without extravagant effort. Small tweaks in the way we do things matter a lot.

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So far we've been correcting familiar tools, adjusting how you use approaches you already reach for. What comes next goes deeper: the traps that no single tool can fix, and the organisations that changed the conditions around their decisions rather than waiting for their people to somehow decide better on their own.