What is decision debt?
Decision debt is the accumulated cost of decisions that were made but not recorded: lost reasoning, unclear ownership, and settled questions that reopen. Like technical debt, it compounds quietly and gets paid back with interest, usually as repeated debates and inconsistent execution.
How does decision debt accumulate?
Every unrecorded decision creates a small liability: the outcome lives in a few people's memories and a buried chat thread. The debt comes due when memory diverges, when the people leave, or when a new hire asks a reasonable question nobody can answer. Teams pay it back by re-running analyses they already did, relitigating settled debates, and applying old rulings inconsistently because nobody can check them.
What are the symptoms of decision debt?
The recognisable signs: the phrase "didn't we already decide this?" appearing in meetings; onboarding that consists of asking veterans why things are the way they are; two managers handling the same case opposite ways; and decisions that everyone remembers differently. Each symptom traces back to the same root: the decision exists only as folklore.
How do teams pay down decision debt?
Prospectively, by recording decisions as they are made, in a decision log or with capture tooling, so no new debt accrues. Retrospectively, by writing records for the standing decisions that matter most: the ones that get questioned or violated most often. Few teams need to document their full decision history; documenting the twenty most load-bearing decisions removes most of the interest payments.
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